To get upgraded on a Carnival cruise, it’s important to understand the Carnival Cruise Upgrade Policy. Carnival often sends out Carnival room upgrade offers via email before your sailing, giving you a chance to bid or accept a low-cost upgrade. You can also increase your chances by booking early, choosing a flexible rate, or being a member of the VIFP loyalty program. Upgrades are sub... https://www.cruisesfares.com/blogs/how-to-get-upgraded-on-carnival-cruise