Can I cancel my cruise online in Manage My Booking?
If you have the Carnival Hub app, you can try to find your booking under "Manage My Booking". If you're having trouble, try clearing the app's cache or trying a different browser or device. 5. Contacting the cruise line 1-855-732-4023 or +1-808-900-8011: If you're still unable to find your booking number 1-855-732-4023 or +1-808-900-8011, you can contact the cruise line's customer service for assistance.
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