The rules that changed
and the ones that bite
Three that genuinely catch tourists. Vapes are illegal to bring in, buy or possess, with no exception for tourists — devices are confiscated, and fines in reported cases run to tens of thousands of baht. Cannabis went back to medical prescription only in late June 2025, so the dispensary free-for-all is over. And lèse-majesté laws are enforced and severe. On scams, one habit defuses nearly all of them: ignore anyone who approaches you first near a major attraction.
The rules that changed — and the ones that bite
Health: Bangkok's private hospitals (Bumrungrad, Bangkok Hospital) are genuinely world-class — and they bill upfront, so travel insurance isn't paperwork, it's the payment plan. Dengue is year-round: DEET at dawn and dusk. Tap water no; factory ice (the cylindrical kind with the hole) yes. Tourist police: 1155.
Scams, condensed to one sentence: ignore anyone who approaches you first near a major attraction. That single habit defuses the 'palace is closed' redirect, the gem-shop tuk-tuk circuit and the friendly-student shop steer. Taxi refuses the meter? Grab or Bolt has already defanged that one. Bangkok's scams are opt-in — you have to say yes to a stranger for almost all of them to work.
Rules that changed, 2025–26 — the freshness list: alcohol sales: 11:00–24:00 by law since 29 May 2026 — the old 14:00–17:00 afternoon gap is now part of the permitted window. Hotels, licensed entertainment venues and international airport areas may serve outside it, the legal drinking age is 20, and sales can still be stopped on election days and major Buddhist holy days. Vapes are illegal to import, sell or possess, and there is no exception for tourists or personal use: devices are confiscated, and fines in reported cases run to tens of thousands of baht (the UK Foreign Office cites ฿5,000–30,000 as typical) — leave it at home, full stop. Cannabis is medical-only since late June 2025: you need a Thai prescription, recreational sale is banned, and carrying it out of the country is a crime. Lèse-majesté laws are enforced and severe — the UK Foreign Office warns the law is read broadly, covers online posts and carries long prison sentences — so exercise extreme caution about the monarchy anywhere, and stand when the royal anthem plays. Drones must be registered with the NBTC, the broadcasting regulator, within 30 days of arrival even if you never fly — the Foreign Office puts the penalty for an unregistered drone at ฿100,000, five years in prison, or both. And the overstay math: ฿500 a day, capped at ฿20,000, plus possible detention and a re-entry ban of up to 10 years — the visa side is on TDAC and Thai visas.
Bangkok health and law FAQ
Is Bangkok tap water safe to drink?
Don't drink it — the pipes and tanks between plant and tap are the gamble. Bottled water is everywhere and cheap, hotels provide it free, and factory ice (cylindrical with a hole through it) is safe. Brushing your teeth with tap water is fine.
Can I bring a vape into Thailand?
No. Possessing or using any vape, e-cigarette, pod, e-liquid or heat-not-burn device is illegal, with no exception for tourists. Airport customs confiscate them, and the UK Foreign Office says offences can mean fines (typically ฿5,000–30,000), detention and court proceedings — you may have to stay in Thailand until the case is closed.
Can tourists buy cannabis in Bangkok now?
Not legally without a prescription. Since late June 2025 cannabis is for medical use only: you need a prescription from a Thai practitioner, recreational sale and advertising are banned, and taking any out of the country is illegal. The shops you may still see are not a loophole.
When can you buy alcohol in Thailand?
Alcohol sales: 11:00–24:00 by law since 29 May 2026, with exceptions for hotels, licensed entertainment venues and international airport areas. The legal drinking age is 20, and sales can be banned on election days and major Buddhist holy days.
- TAT Newsroom — alcohol sales 11:00–24:00 from 29 May 2026, exemptions, drinking age 20
- UK Foreign Office — vape ban and typical fines, drone registration and penalty, lèse-majesté, cannabis prescription rule
- Tilleke & Gibbins — cannabis back to medical-only from late June 2025
- UK Foreign Office — overstay fine ฿500 a day up to ฿20,000 and re-entry bans
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