Most travelers expect to avoid trouble abroad by skipping the obvious offenses. The real danger is the ordinary stuff: a vape in a carry-on, a cold remedy from the bathroom cabinet, a quick photo for social media. Things that are legal and harmless at home can turn into a fine, a detention, or worse once you cross a border.
Here are six destinations where that gap between “normal at home” and “illegal here” catches visitors off guard. Rules change, so check your government’s current travel advice before you fly. The details below come from official advisories and recent travel-law reporting.
Singapore: Vapes, Even Just in Transit
Singapore is known for rules, but vaping surprises a lot of people. Vaping has been banned there since 2018, and enforcement was stepped up sharply on September 1, 2025.[1] Foreigners caught with vapes can have their devices seized and be fined on the spot, and repeat offenders can be banned from the country.[2] Adults were fined S$700 under the September 2025 measures.[3]
The crackdown was driven by vapes laced with etomidate, an anesthetic known locally as “Kpods.” The rules apply to tourists as well as residents, and foreigners face the same penalties as citizens.[4] One recent traveler guide also says the ban reaches passengers who never clear immigration at Changi Airport[5], and that tougher penalties took effect under the renamed Tobacco and Vaporisers Control Act in May 2026. Penalty figures differ between sources, so the safest move is simple: leave the vape at home, and check your pockets and bags before a layover.
Thailand: Vapes and Heated Tobacco Devices
Thailand feels relaxed, which is why the vape ban catches so many people. The country has had a complete ban on e-cigarettes since 2014.[6] That covers vapes, e-cigarettes, heated tobacco systems such as IQOS, and the liquids for them.[7] Tourists often assume that a device they use freely at home will be tolerated in a beach town.
The statutory penalties are heavy on paper. Under the Customs Act, importing vapes can bring a fine of up to five times the value of the items and up to 10 years in prison.[8] In practice, most tourists caught with vapes face confiscation and an on-the-spot fine, and sometimes a few hours at a police station.[8] Still, a nationwide crackdown ordered in early 2025 raised arrests, seizures and fines, and enforcement remained strict into 2026.[9] The Tourism Authority of Thailand has long warned that foreign travelers unaware of the ban have faced on-the-spot fines or arrest.[10]
Japan: Everyday Cold and ADHD Medicines
Japan is polite and orderly, so a customs problem feels unthinkable. Yet the country’s medicine rules are among the strictest travelers meet. Common ADHD prescriptions such as Adderall and Vyvanse, and cold medicines containing pseudoephedrine like Sudafed, are controlled under the Stimulants Control Act.[11] Actifed and Vicks inhalers are also on the prohibited list.[12]
A doctor’s note doesn’t solve it. Adderall and Vyvanse are banned even with a valid US or Canadian prescription.[13] Bringing these drugs in for any reason risks arrest and imprisonment.[12] Some other medicines are allowed with paperwork: Ritalin and Concerta need a “Yunyu Kakunin-sho” import certificate approved in advance.[13] Check the ingredient list, not the brand name, and contact the Japanese health authorities or your embassy well before departure.
United Arab Emirates: Medications and Photos
The UAE is glossy and tourist friendly, but its laws on drugs and online behavior are strict. The U.S. State Department says the UAE has strict rules on social behavior, drug possession and video recording of officials, the public and infrastructure, and that breaking them can mean arrest, fines or an exit ban.[14] Medications are an easy trap. Travelers bringing controlled medication must get prior approval from the UAE Ministry of Health and Prevention.[15] Products containing CBD are also prohibited, even just residue.[14]
Photos are the other surprise. Photographing people, particularly women, without permission can lead to arrest or fines.[16] Posting photos of people or their belongings on social media without consent can be illegal, including people in the background.[16] One legal summary reports that privacy violations under the Cybercrime Law carry at least six months in prison and a fine of AED 150,000 to AED 500,000.[17] A scenic skyline shot with strangers in the frame can be riskier than it looks.
Indonesia: New Criminal Code and Strict Drug Laws
Bali’s beaches and cafes can make Indonesia feel like a place with few rules. That impression is risky. Indonesia’s long-debated revised criminal code took effect in January 2026, and its provisions on morality, including sex outside marriage and unmarried cohabitation, drew heavy international attention. Indonesian officials have said these offenses can only be pursued when a close family member, such as a spouse, parent or child, files a complaint, so everyday tourist risk appears limited. Even so, it’s worth reading your government’s current travel advice before you go.
The clearer danger for visitors is drugs. Indonesia is widely known for tough drug laws, and possession of even small amounts can lead to arrest. Travelers sometimes assume that casual availability in tourist areas means leniency, and that is a dangerous guess. Don’t carry anything illegal, don’t accept packages for strangers, and keep prescription medication in its original packaging with documentation.
Italy: Fountains, Steps, and Local Ordinances
Italy’s trap isn’t one national law but a patchwork of city rules written to protect crowded historic centers. In Rome, for example, local regulations aim to stop behavior such as bathing in fountains or lingering on monuments like the Spanish Steps. Tourists often see these places as open public spaces, so a quick dip or a sit-down lunch on a famous staircase can look harmless.
Fines for these offenses can reach into the hundreds of euros, and police do issue them. Rules vary from city to city and change over time, so look for posted signs and check the municipality’s current guidance. Venice, Florence and other heavily visited towns have their own ordinances about eating, sitting and dress near landmarks and churches. A good rule is to treat monuments as museums rather than playgrounds.
The pattern across all six countries is the same. The offense usually isn’t dramatic. It’s a small habit, packed without thought, that lands in a stricter legal system than the one you know. Before you travel, check three things: your medications, your electronics (vapes especially), and what you plan to photograph or post.
Official travel advisories from your own government are the best starting point, since they’re updated as laws change. A few minutes of reading costs far less than a fine, a missed flight, or a night at a police station. Ignorance of the law is rarely accepted as an excuse, so the best souvenir is a trip with no surprises.
