How to Get Upgraded on Carnival? Carnival Cruise offers several ways to score a Carnival cabin upgrade. Through the Carnival Cruise Upgrade Policy, eligible guests may receive room upgrade offers via email or in their booking profile. You can also bid for a Carnival Cruise room upgrade through the Upgrade Advantage Program or ask about available upgrades at check-in. Whether you're ai... https://www.cruisesfares.com/blogs/how-to-get-upgraded-on-carnival-cruise