Yes, you can change a passenger name on a Carnival Cruise, but certain rules apply. Minor corrections, like fixing a misspelled name, are usually free if done early and if you didn’t book a restricted fare like Early Saver or Pack & Go. If you're replacing one guest with another, at least one original passenger must remain on the booking—otherwise, it’s treated as a cancellation and s... https://www.cruisesfares.com/blogs/carnival-cruise-name-change-policy