1. Sign up for the Carnival World MasterCard
Sign up and you'll receive FunPoints to use toward your next Carnival cruise.  Earn 5,000 FunPoints after your first purchase for a $50 statement credit.  Earn 1 FunPoint for every dollar spent on everyday purchases, and 2 FunPoints for every dollar spent on Carnival Cruise Lines purchases.  With the Carnival World MasterCard, pay no annual fees or foreign transaction fees.

2. Save with your AAA Membership
AAA members can receive a free double upgrade on select sailings posted on the AAA website.

3. Take Advantage of the Lowest Price Guarantee
If you find a lower price on a Carnival cruise within 48 hours after booking your cruise, fill out a lowest price guarantee claim form to receive 110% of the price difference in onboard credit.  This price guarantee only applies to publicly available rates.