To be sure, Carnival gift cards aren’t the only cruise line gift cards you can buy on sale. As an example, Royal Caribbean and Celebrity gift cards were recently offered through AARP for a 10% ...

The Carnival® World Mastercard® is a co-branded travel rewards credit card designed for people who frequently travel with Carnival Cruise Lines and other World’s Leading Cruise Lines brands.

Issued by Barclays, it offers modest introductory offers, and Carnival super cruisers in particular may enjoy the card's discounts on shore excursions. Still, most customers may be better off with ...

AARP offered Carnival Cruise Line gift cards at a discounted price, but that offer was pulled earlier this year. On the day of this writing (March 18), Newegg started selling $500 Carnival gift ...