Japan

Bringing any cannabis into Japan — including edibles, CBD oil that contains THC, or vape cartridges — is strictly prohibited with no exception for tourists, and possessing or using cannabis in Japan is itself a crime that can bring years in prison.

Up to 7 years imprisonment.

Adderall and other amphetamine stimulants cannot be brought into Japan — even with a prescription. Risk of arrest.

Arrest and detention by Japanese authorities.

Common cold and allergy medicines containing pseudoephedrine (Sudafed, Actifed, Vicks inhalers) or codeine are banned in Japan — a US prescription does not make them legal.

Arrest and detention by Japanese authorities.

You must declare to Japan Customs if you carry cash or monetary instruments worth more than 1,000,000 yen (about US$6,500) into or out of the country.

Failure to declare can bring fines and criminal charges.

Nicotine e-liquid is regulated as a medicine in Japan - you may bring in only a personal-use amount (up to about a two-month supply; one month for prescription-class drugs) without an import certificate, and importing it for sale requires a license.

Larger amounts need a Yakkan Shoumei import certificate.

You may drive in Japan only with an International Driving Permit issued under the 1949 Geneva Convention — IDPs issued under the 1968 Vienna Convention are not accepted here.

Driving without a valid permit is unlicensed driving (fines, possible arrest).

There are no restrictions in Japanese law on same-sex sexual relations or the organization of gay and lesbian events.