If you are the holder of a Carnival Cruise Line MasterCard issued by Barclaycard, you have several options for paying your monthly credit card payment. You can pay:
- Online: Log in to your account at the Barclaycard site and make your payment.
- By Mail: Send your payment to the following address: Carnival MasterCard, P.O. Box 60517, City of Industry, CA 91716-0517
- By Phone: The Carnival / Barclaycard credit card customer service phone number for payments is 866-928-8598.