No, as of 2026, Carnival Cruise Line strictly prohibits all knives, including small pocket knives and Swiss Army knives, regardless of the blade length. In previous years, some cruise lines allowed blades under 4 inches, but the industry has moved toward a "Zero Tolerance" policy to simplify security screenings and ensure passenger safety. If a pocket knife is found in your luggage during the X-ray scan at the terminal, it will be confiscated, and you may not get it back until the end of the voyage—or it may be disposed of entirely. This rule also applies to multi-tools that contain a blade. The only exceptions are for blunt-tipped scissors (under 4 inches) used for crafts and specialized dive knives that must be declared and held by the ship's security officer until you go on a shore excursion. For everyday needs, Carnival recommends leaving the cutlery at home and using the provided dining utensils on board.