No, you cannot bring gummies containing CBD, THC, or any cannabis derivatives on a Carnival cruise, regardless of their legal status in your home state or the presence of a medical prescription. Carnival Cruise Line has a strict zero-tolerance policy for all such products, as they are governed by federal maritime law and the laws of the various international ports the ship visits. Even "legal" hemp-derived CBD gummies with less than 0.3% THC are prohibited and will be confiscated by security. In 2026, Carnival has significantly increased its use of drug-detection K9 units at embarkation terminals, and passengers caught with these items risk more than just confiscation; you can be denied boarding without a refund and, in many reported cases, receive a lifetime ban from the cruise line. If you are bringing standard "vitamin" or "candy" gummies, it is best to keep them in their original, factory-sealed packaging to avoid any confusion during the security screening process, as unlabelled or "transfered" gummies are often treated with extra suspicion.