What to Know Before You Go to the United States

The One Number That Changes Everything

New York to Los Angeles by road is 2,800 miles. That is the distance from Lisbon to Moscow. Land at JFK imagining you can tack on a weekend in San Francisco without a flight and you have already made the mistake that derails more first-time itineraries than any other. The United States is not a country you visit. It is a continent you navigate, and the rules of that navigation demand a specific set of behaviours from you before you book a single night.

Forget the postcards. The real picture is a place of extraordinary geographic and cultural variety. You need to understand the scale, the car dependency, the hidden costs, and the unwritten social contract. Here is the operating manual. Attractions, neighbourhoods, and regional breakdowns live elsewhere.

Why the Map Lies

A map of the United States at the scale you are used to for Europe or Japan is deceptive. That 800-mile drive from New York to Chicago equals London to Barcelona. The 3,300-mile drive from Miami to Seattle is the distance from Madrid to Moscow, then onward to Tehran. Unlike European motorways, American interstates between those cities can run for hours without a town, a restroom, or a cell signal.

Your Transport Reality

Outside the Northeast Corridor, Amtrak is scenic but slow, infrequent, and often hours late. Long-distance routes run once daily per direction. The bus network covers more ground, but a cross-country trip by coach is an endurance test, not a holiday. The dominant mode is the private automobile. You need a credit card to rent a car, a valid home-country driving licence, and an International Driving Permit if your licence is not in English. Some states require the permit even when your licence is in English. Check the rules of every state you plan to traverse.

Ride-hailing services operate in most urban areas but disappear in rural stretches. If you rent a car, budget for one-way fees when you fly out of a different city. Book that rental car as far ahead as you book your flights. Inventory tightens in peak season. Walk-up rates at airport counters punish the unprepared.

The Costs That Are Not on the Price Tag

Sales tax is added at the register, not displayed on shelf prices, and varies by city and county. A shelf price in a high-tax jurisdiction lands higher at the counter, and the combined rate can exceed 10%. Five states charge no state-level sales tax. Everywhere else, the rate combines a state portion and a local portion. Lodging tax is separate. A quoted hotel rate swells after occupancy tax and resort fees. Resort fees are common in tourist destinations and are not included in the initial booking price on many platforms. Read the fine print before you click confirm.

Tipping Is the Wage

Tipping is not a bonus. It is how the service industry pays its workers. The federal tipped minimum wage sits below the standard minimum wage. When you tip 18 to 22 percent at a sit-down restaurant, you are completing the wage. Failing to do so is seen as withholding pay, not expressing dissatisfaction. Some restaurants add an automatic charge for parties of six or more. Check the bill. For food delivery, tip 15 to 20 percent of the order total or a minimum of a few dollars. For hotel housekeeping, leave a few dollars per night in cash. Cash tips reach workers faster and avoid card processing fees.

The Hidden Risk

Health care costs are the hidden risk. Get travel insurance with medical coverage. A visit to an emergency room for a broken ankle can run into the tens of thousands of dollars without insurance. No universal healthcare system exists. If that fact genuinely stresses you, the United States may not be the right destination.

The Social Rules You Cannot Google

Public restrooms are scarce in most cities. You are expected to buy something to use a cafe's facilities. Highway rest areas exist but vary in quality and safety. Plan your bathroom stops before you set out, especially on long drives across the Great Plains or the Mountain West.

Tap water is safe to drink from all municipal systems. In parts of the rural Southwest and the Plains, it tastes strongly of minerals or sulphur. Buy bottled water if the flavour bothers you. Ice in beverages is standard. Water and soft drinks arrive with ice unless you request otherwise.

Jaywalking laws are enforced unpredictably. In some downtowns, crossing against the light carries a real fine. In others, no one cares. Watch what locals do and follow their lead. Smoking is banned in indoor public places in most states. The legal age for both smoking and alcohol purchase is 21 in all 50 states. Alcohol sales on Sundays are permitted in most states but restrictions remain in some counties and municipalities. Open container laws prohibit drinking alcohol in a vehicle in all 50 states. The blood alcohol concentration limit for drivers aged 21 and over is 0.08 percent. Enforcement is not theoretical.

Cannabis is illegal under federal law. State laws vary from fully legal to fully prohibited. Possession on federal land, which includes national parks, is a federal offence. Firearm possession by non-residents is heavily restricted. Non-immigrant aliens are generally prohibited from possessing firearms unless they meet specific exceptions. If the presence of widespread firearms or the absence of universal healthcare is genuinely stressful rather than just different, consider whether this is the right trip.

What to Pack, What to Download, What to Book

Download offline maps before you drive through the Mountain West or the Great Plains. Free Wi-Fi is widespread in chain hotels and coffee shops but patchy in national parks and rural areas. A prepaid eSIM from Airalo or Holafly works well. A physical US SIM from T-Mobile or AT&T bought at an airport or big-box store gives better rural coverage. Check your phone's carrier band compatibility before you travel. The US uses both GSM and CDMA networks; most modern international phones are compatible, but not all.

The electrical system runs at 120 volts and 60 hertz. Plug types are Type A with two flat parallel pins and Type B with a grounding pin. Your devices need a voltage converter if they are not dual voltage. The measurement system is US customary: miles, feet, inches, pounds, gallons, Fahrenheit. The date format is month/day/year. Do not expect metric road signs. You will not see any.

Book Before You Fly

Book national park lodging 12 months ahead for the Grand Canyon South Rim, Yellowstone, and Yosemite Valley. Timed entry reservations are required at select parks during peak seasons. The annual America the Beautiful pass covers entrance fees at all National Park Service sites and many other federal recreation lands. State park entry fees are separate and set by each state. If you plan to visit multiple parks, the annual pass pays for itself after three or four entries.

Entry Requirements by Citizenship

Canadian citizens need no visa for tourist visits. A passport or an approved alternative document is required. Citizens of the United Kingdom, Australia, most European Union member states, and Japan need no visa for tourist visits under the Visa Waiver Program. They must obtain an ESTA authorisation before travel. ESTA is valid for two years from approval or until passport expiry, whichever is sooner. The fee is set by US Customs and Border Protection and is revised annually. Indian and Chinese citizens require a B-2 tourist visa, obtained through an application at a US consulate. For Visa Waiver Program travellers, the passport must be valid for the entire period of intended stay. There is no six-month rule for VWP travellers.

Arriving and Moving Through the Country

Major intercontinental gateways include New York JFK, Los Angeles LAX, Chicago ORD, Miami MIA, San Francisco SFO, and Dallas DFW. From JFK, take the AirTrain to Jamaica Station, then the Long Island Rail Road to Manhattan Penn Station. The journey takes 50 to 70 minutes. From LAX, the FlyAway bus to Union Station takes 45 to 60 minutes. No direct rail link exists at LAX. Most other airports require a rideshare or a rental car. Public transit connections range from limited to nonexistent.

Domestic Flights

Domestic flights connect all 50 states. Some rural and island locations are accessible only by air. Hartsfield-Jackson Atlanta International Airport is the busiest by passenger volume. Check in two hours before domestic flights. Most airlines charge for checked baggage on domestic economy fares. Carry-on policies vary by airline and fare class. For domestic flights, US citizens may use a Real ID-compliant driver's licence. Foreign nationals must carry their passport and relevant immigration documents. Real ID enforcement is in effect for domestic air travel.

Driving Rules

If you plan to drive, understand the speed limits. On rural interstate highways, the limit reaches 65 to 80 mph. On urban interstates, it sits at 55 to 65 mph. Seat belts are mandatory in all states. The minimum age to rent a car is 21, with a surcharge for drivers under 25. One-way rental fees can be substantial. Book a rental car as far in advance as your flights.

Regional Realities at a Glance

Every region of the United States operates on different rhythms, climates, and infrastructure. The table below gives you the practical facts for each. Use it to decide where to invest your limited time and where to skip entirely.

When to Go and When to Stay Home

Peak season runs June through August. School summer holidays drive domestic demand. National parks are fully open. Coastal areas are at their warmest. Late December is a secondary peak for ski regions and holiday travel. If you can travel in May, September, or October, you will find lower prices, fewer crowds, and milder weather in most regions.

Dates to Dodge

Avoid late August to early September in Gulf Coast states. Hurricane risk peaks and humidity is suffocating. Avoid Thanksgiving week in late November. It produces the year's worst domestic air travel crush and price spikes. Avoid national parks on July 4th weekend and Labor Day weekend unless you have reservations made months ahead. Park entrances can close to incoming traffic by mid-morning on those weekends.

Weather That Dictates Your Trip

Winter in the Northern Plains and Upper Midwest sees lows routinely below 0°F. Summer in the Southwest desert sees highs routinely above 100°F. The Pacific Northwest is rainy from October through May with persistent light to moderate rain. Tornado season peaks April through June in the Great Plains, Midwest, and Southeast. Wildfire season runs late summer through autumn in western states. Hurricane season runs June through November with peak activity August to October. These are not abstract warnings. They determine whether your trip is enjoyable or miserable. Plan around them.

What First-Timers Get Wrong

The single most common mistake is underestimating driving times. What looks like a short hop on a map can be five to eight hours of highway driving with nothing in between. Fill your tank when you see a gas station, not when you need one. Carry water, snacks, and a physical map. Cell coverage drops in rural mountains, deserts, and remote public lands.

The second mistake is assuming you can fly or take a train between mid-sized cities quickly. Distances are enormous. Outside the Northeast Corridor, Amtrak is scenic but slow, infrequent, and often hours late. A flight between two regional airports may involve a connection in a distant hub that doubles the travel time.

The third mistake is failing to budget for tipping and tax. Add 30 percent to every restaurant and service estimate in your head. A meal out costs far more than the menu price after sales tax and a tip. A quoted hotel rate swells after occupancy tax and a resort fee. The ride-hail fare climbs after the tip.

Book the Big Names Early

The fourth mistake is ignoring the need for advance reservations at popular national parks and attractions. Grand Canyon South Rim lodging books out 12 months ahead. Yellowstone in-park lodging books out 12 months ahead. Yosemite Valley requires entry reservations during peak season. Statue of Liberty crown tickets sell out four to six months ahead. The National Mall in Washington DC requires no booking. Most other high-demand attractions do. Book before you book your flights.

Who This Country is for and Who Should Skip it

The United States suits road-trippers, national park collectors, big-city energy seekers, sports and live music fans, and travellers who want to change climates and cuisines without changing currency or language. It rewards the traveller who treats it as a series of distinct regions rather than a single destination, and who budgets generously for time, money, and advance planning.

It is not for travellers who prefer compact, walkable destinations with robust public transport. It is not for those on a shoestring budget once you leave major cities. It is not for anyone unwilling to drive long hours or fly repeatedly. Skip it if you find the absence of universal healthcare, widespread firearms, or tipping culture genuinely stressful rather than just different. The United States does not meet you halfway. You meet it on its own terms, or you fight it the entire trip. Choose accordingly.