3-1-1 Liquids RuleYou are allowed to bring a quart-size, zip-lock bag of liquids, aerosols, gels, creams and pastes though the checkpoint in carryon luggage. These combined items need to be less than 3 ounces.
There are no rules or policies against bringing unsealed cosmetic and toiletry items onboard, though any bottled water you bring onboard must be factory sealed.
Carnival conducts security scanning of all luggage and reserves the right to confiscate any item, which in Carnival's sole discretion, is deemed dangerous or can pose a risk to the vessel or its guests.
You are allowed to bring a quart-size, zip-lock bag of liquids, aerosols, gels, creams and pastes though the checkpoint in carryon luggage. These combined items need to be less than 3 ounces. More information from the TSA. So the 3-1-1 rule is the TSA's quick reminder: 3 ounces, 1 quart bag and 1 bag per traveler.
Carnival Cruise Line: Carnival has one of the loosest beverage policies of all cruise lines, allowing each guest to carry on a maximum of 12 sealed 12 oz.cans or cartons of a non-alcoholic beverage (e.g., sodas, juices, milk, or sparkling water) – a policy that most cruise lines have eliminated.
The best news about packing is that there is no (reasonable) limit on how much you can bring on a cruise. Most cruise lines “encourage” or “suggest” each passenger to limit luggage to two suitcases, each one less than 50 pounds. In addition, you can also bring carry-on luggage (more on that in a moment).
Just like the security screening at an airport, we also screen all luggage our guests bring onboard to ensure everyone's safety. If there is an item in your luggage that is prohibited or is believed to be prohibited, your bag will be taken to a screening location and will be inspected by our Security Team onboard.
Guests may also bring non-alcoholic beverages as carry-on items on boarding day. Non-alcoholic beverages may not exceed 12 standard (17 oz.) cans, bottles or cartons per stateroom. Milk and distilled water brought on for infant, medical, or dietary use are permitted.
The ban was put in place after British authorities thwarted a plan to blow up a U.S.-bound plane with liquid explosives. There is now technology to send that ban down the drain. Airports across the U.S. are now using X-ray scanners that use CT technology to give guards a 3-D image of your carry-on.