Touchdown in the United States means tapping OMNY, Ventra or Clipper readers instead of buying paper tickets, budgeting for sales tax added at the register plus an 18–20% tip, and — for Visa Waiver travellers — holding an approved ESTA ($40.27). For instant, queue-free data from the moment you land, activate a TravelyData eSIM before you fly — it logs onto America’s three nationwide networks (T-Mobile, Verizon, AT&T) automatically.
Touchdown in America: ESTA, Immigration and Setting Up Your eSIM
For Visa Waiver Program travellers, the journey starts with the Electronic System for Travel Authorization — ESTA — before you ever board the plane.
Apply only through the official U.S. Customs and Border Protection (CBP) website or app. Broker sites that mimic the government portal will charge you a fat mark-up for the same filing. The legally set cost is $40.27 in total ($10.27 application fee plus $30 if approved), and the authorisation is valid for two years. Apply at least 72 hours before departure, because manual review can take up to three days — and without an approved ESTA you can be denied boarding.
On arrival you will be photographed and fingerprinted, so keep your e-Passport (the one with the embedded chip) valid for at least six months, and have your return ticket and accommodation address handy. If you are carrying cash, you must declare $10,000 or more in currency or monetary instruments — failing to do so can trigger confiscation and heavy penalties.

Tapping to Ride: OMNY, Ventra, Clipper and the Cashless Transit Revolution
America’s big-city transit has moved to open-loop contactless payment — you tap your credit card or phone and walk through.
New York runs on OMNY (base fare $2.90), Chicago on Ventra (bus $2.25, “L” train $2.50), and the San Francisco Bay Area on Clipper, one card for 24 agencies including BART and Muni. Set up Express Transit mode in Apple or Google Wallet so you can tap your locked phone and pass the gate without waking the screen.
Outside the dense cities, transit thins out fast — you will lean on Uber and Lyft, or a rental car. If you drive, expect cashless toll roads in states like Florida, California and New York: cameras photograph your plate and bill you automatically. Decline the rental counter’s daily transponder and open a temporary visitor toll account linked to your own card instead — it is nearly always cheaper.

Sales Tax Sticker Shock, Cash Tips, and the $10,000 Rule
The price on the shelf is not the price you pay — sales tax is added at the register, and tipping is a cultural obligation, not a bonus.
Only Alaska, Delaware, Montana, New Hampshire and Oregon charge no statewide sales tax. Elsewhere the combined state-and-local rate can top 10% in cities like Chicago and Los Angeles, so a $100 jacket can ring up closer to $110. Budget for it.
Restaurant servers are paid a sub-minimum cash wage ($2.13/hour federally), so tips are their real income. Leave 18% of the pre-tax bill for satisfactory service and 20% or more for good service. Carry small bills for people you cannot tap — bellhops ($1–$2 per bag), valets ($2–$5), and daily housekeeping tips.

Diners, Personal Space, and Roadside Americana
American food culture lives in the classic diner — vinyl booths, neon signs, bottomless drip coffee, and generous portions.
At a diner you usually pay at the front register on the way out, not at the table. Respect the “personal space bubble” of roughly an arm’s length, and know that “How’s it going?” is just a greeting — answer “Good, thanks, you?” rather than a life story.
For pure Americana, drive Nevada’s Extraterrestrial Highway (Route 375) past Area 51, or detour to Salvation Mountain near Slab City in the California desert. Keep the tank full — running out of fuel on a fast interstate is a preventable hazard and can draw a fine.

Frequently Asked Questions
What is the best mobile network in the United States?
For most travellers, an eSIM that runs on T-Mobile or Verizon with 4G LTE speeds up to 150 Mbps delivers the best mix of city and highway coverage.
Where can I find official travel and visa information for the United States?
Use the official U.S. Customs and Border Protection site for ESTA and entry rules, and the official United States tourism portal for itinerary ideas.
Should I get an eSIM before travelling to the United States?
Yes — activating your eSIM before you land keeps you connected the moment you arrive, so you can tap into transit, book rides and navigate without hunting for a physical SIM.

