Looking for a Carnival Cruise room upgrade? You may qualify for carnival room upgrade offers by booking early, joining the VIFP loyalty program, or selecting a guaranteed cabin. Carnival may also offer last-minute paid upgrades or send bid invitations. Per the Carnival Cruise upgrade policy, all upgrades must be done before boarding—no changes allowed once onboard. For help with a ... https://forum.prusa3d.com/forum/english-forum-general-discussion-announcements-and-releases/how-to-get-upgraded-on-carnival/