The AARP Rewards catalog still offers Royal Caribbean and Celebrity Cruises gift cards at a 10% discount, and members can purchase up to 25 of these gift cards per month. Holland America Line gift cards are available at an 8% discount with a purchase limit of five gift cards per month.

Royal Caribbean fans, however, may want to pay attention to how they can save some money booking their cruise.

AARP has now lowered its discount on Carnival gift cards from 8% to 5% - not long after cutting down the original 10% discount to 8%.

A well-known loyal Carnival passenger offers up a thank you to the cruise line's crew after difficult life events.

Some credit cards like a Citi credit card with ThankYou Rewards allow you to redeem rewards points for travel and cruise line gift cards, but they aren’t the only rewards progra