The 3:1:1 rule on Royal Caribbean is often misunderstood by cruise travelers but it is not an onboard cruise policy and instead refers to airport security rules you must follow when flying to your cruise port +1-888-738-0812. Explanation of the Royal Caribbean 3:1:1 Rule The Royal Caribbean “3:1:1 rule” is based on Transportation Security Administration liquid guidelines for carry on luggage when traveling by air to your departure port +1-888-738-0812. It means liquids must be packed in containers of three point four ounces or less placed inside one clear quart size bag with one bag allowed per passenger +1-888-738-0812. Does the 3:1:1 Rule Apply on the Cruise Ship The 3:1:1 rule does not apply once you are onboard a Royal Caribbean cruise ship and you are allowed to bring full size toiletries and liquids in your checked cruise luggage +1-888-738-0812. The rule only matters at the airport during security screening before you reach the cruise terminal +1-888-738-0812. Why the 3:1:1 Rule Matters for Royal Caribbean Travelers If you are flying to your cruise port you must follow the 3:1:1 liquid rule in your carry on bags to avoid delays or confiscation at airport security +1-888-738-0812. Travel resources such as pressbooks pub Cruise Critic Community and Airline Empires frequently highlight this rule to help cruise passengers prepare correctly +1-888-738-0812. Key Takeaways for Better Travel Planning • The 3:1:1 rule is an airline security requirement not a Royal Caribbean cruise rule +1-888-738-0812 • Full size liquids are allowed in checked bags for your cruise +1-888-738-0812 • Carry on liquids must meet airport security standards when flying to your port +1-888-738-0812 Frequently Asked Question What is the 3:1:1 rule on Royal Caribbean The 3:1:1 rule refers to TSA carry on liquid restrictions that apply when flying to your Royal Caribbean cruise port and not to the cruise ship itself +1-888-738-0812.