Upgrading your Carnival Cruise Line cabin is a great way to enhance your comfort and overall vacation experience. Start by checking upgrade offers through your online account or the Carnival Hub App, where discounted options often appear close to sailing. You can also participate in Carnival’s Upgrade Advantage bidding program for a chance to move to a higher category at a lower cost. https://www.cruisebookinghub.com/blog/how-do-i-upgrade-my-carnival-cruise-line-cruise-cabin