Best credit card to use at Carnival Cruise Line.

Carnival Cruise Line is the largest U.S. cruise operator by passenger volume, owned by Carnival Corporation (which also owns Princess, Holland America, and Cunard). Cruise bookings code as travel on every card we track. Pre-booked shore excursions, drink packages, and gratuities purchased through the cruise line generally code as travel as well. Onboard charges (folio purchases) often code as travel but sometimes as cruise-specific — worth confirming on a small charge before relying on a 3x travel multiplier.