For travelers aged 18 and older, the Cayman Islands customs allowance in 2026 permits you to bring in a limited amount of alcohol duty-free. Specifically, you are allowed to import 1 liter of spirits (hard liquor), 4 liters of wine, or 9 liters of beer (roughly one case of 12-oz bottles). If you exceed these limits, you must declare the additional alcohol and pay the relevant import duties and taxes, which can be quite high. It is also important to note that you cannot "pool" your allowances with other travelers to bring in larger single items. In 2026, customs officers at Owen Roberts International Airport are quite diligent about checking these limits, especially for high-value spirits. Additionally, you must ensure that all alcohol is in your checked luggage, as 2026 security rules still prohibit liquids over 100ml in carry-on bags. For the 2026 traveler, while it might be tempting to bring your favorite vintage from home, the Cayman Islands boasts an impressive selection of duty-free shops and local rum distilleries that are often more convenient and competitively priced than paying the extra baggage and duty fees.