Yes, Royal Caribbean utilizes drug-sniffing dogs as part of its routine security and boarding procedures in 2026. These highly trained canines are most commonly seen at major U.S. homeports like Miami, Port Canaveral, and Galveston, where they work alongside U.S. Customs and Border Protection (CBP) officers to screen both checked and carry-on luggage. The cruise line has explicitly stated that they have a "zero-tolerance" policy regarding illegal substances, including marijuana (even for those with a valid medical prescription), as the ship must comply with federal and international laws rather than state laws. While you might not see the dogs on every single sailing, they are often used for "random sweeps" during the boarding process or if security receives a tip-off about a specific cabin. Being "alerted" by a dog can result in an immediate search of your belongings, a permanent ban from the cruise line, and potential arrest by local authorities at the next port of call.