Why are the Ultimate World Cruise and the four Ultimate Cruise segments only offered as nonrefundable?

Our Ultimate World Cruise and the four Ultimate Cruise segments are a unique adventure that has never before been offered by Royal Caribbean and we want to ensure that our guests who are committed to sharing this experience with us receive priority placement. To preserve this unique experience, all sailings onboard Serenade of the Seas from December 10, 2023 – September 10, 2024, will be offered as exclusively nonrefundable.