More vacations are ruined at the check-in counter than by any storm. An expired passport, a birth certificate that turns out to be a photocopy, a driver's license the TSA won't take — I've seen each of these end a trip before it started, and every one was preventable. So let's sort out the document rules as they stand right now, because a few of them changed recently.
REAL ID: yes, it's really being enforced now
After roughly two decades of delays, REAL ID enforcement began May 7, 2025. For domestic flights, adults now need a REAL ID-compliant license (look for the star marking), or an acceptable alternative — a passport book, a passport card, or an Enhanced Driver's License from the handful of states that issue them.
And the grace period has real teeth now: travelers without compliant ID initially got extra screening, but as of this year TSA charges a $45 fee for its identity-verification process if you show up without acceptable ID — and it only covers a 10-day window. Forty-five dollars to board a flight you already paid for is a bad souvenir. Check your license for the star today; if it's not there, your passport works at TSA in the meantime. Details are at tsa.gov/real-id.
Passports: the six-month rule and the calendar math
A passport that's technically unexpired can still be functionally useless: many countries require six months of validity beyond your travel dates, and much of Europe wants at least three months beyond your departure (the State Department's traveler checklist covers this). My personal rule for clients: if your passport expires within nine months of your return date, renew before the trip.
Routine processing currently runs about 4–6 weeks plus mailing time, expedited 2–3 weeks for an extra fee — check current times at travel.state.gov. The week I book any international trip, I check every traveler's expiration date. It takes two minutes and it has saved more than one family reunion.
Closed-loop cruises: the famous "no passport needed" rule, with the fine print read aloud
It's true: U.S. citizens on a closed-loop cruise — one that starts and ends at the same U.S. port — can sail to most of the Caribbean, the Bahamas, Mexico, and Canada with a government-issued photo ID plus an original or certified birth certificate (kids 15 and under generally need just the birth certificate). No passport required, says U.S. Customs and Border Protection. Here's the fine print I read to every client:
- "Original or certified" means exactly that. Photocopies, phone photos, and laminated souvenir certificates get families denied boarding every sailing.
- Some islands want a passport anyway. A few ports — Martinique is the classic example — require one even on a closed-loop itinerary; no passport means you stay on the ship that day. This is itinerary-specific, and it's one of the first things I check when I book you.
- Different start and end ports = not closed-loop. A cruise from one U.S. city to another still requires a passport.
- The emergency problem. If you miss the ship or have a medical evacuation abroad, you'll need to fly home from a foreign country — and that requires a passport book. This is why every cruise line "strongly recommends" passports even when they're not required, and so do I.
The passport card is a nice budget middle ground for frequent closed-loop cruisers: it's valid for land and sea entry from Canada, Mexico, Bermuda, and much of the Caribbean, and it satisfies REAL ID for domestic flights. Just know its limit — it is not valid for international air travel, so it doesn't solve the fly-home-in-an-emergency problem.
The new alphabet soup: ETA and ETIAS
Two European entry systems keep making headlines, and clients keep asking, so here's the current state of play:
- UK ETA — in effect now. Americans visiting or connecting through the UK (a London stopover before your British Isles cruise, for instance) need an Electronic Travel Authorisation before flying: an online application with a small fee, valid for two years of visits. Apply through the official gov.uk site — not the lookalike sites that charge triple.
- EU ETIAS — not yet. Europe's version has been announced and delayed several times, and as I write this it is not in effect — no fee, no form, nothing to buy. When it finally launches, there will be plenty of notice, and my clients will hear it from me first. Beware of sites happily "pre-registering" travelers today for a fee.
My document checklist for every booking
- Check every traveler's passport expiration against the nine-month rule the day we book
- Verify the specific itinerary's document requirements — including passport-required ports on "no passport needed" cruises
- Confirm whose license has the REAL ID star before anyone books airfare
- Names on bookings match documents exactly — middle names included; mismatches cause real problems
- Kids' documents sorted early: birth certificates for closed-loop, passports for everything else
- Copies of everything in two places: printed in your carry-on, photos on your phone
Not sure what your trip needs?
Send me your itinerary — or the trip you're dreaming about — and I'll tell you exactly which documents your family needs and when to start. Before you book, not after.
Email Robin Or call 925-890-5837