Perks on a Disney cruise are primarily earned through the Castaway Club, Disney Cruise Line's tiered loyalty program. You are automatically enrolled after completing your first sailing. The tiers are Silver (after 1 sailing), Gold (after 5 sailings), Platinum (after 10 sailings), and Pearl (after 25 sailings). Benefits include early booking windows for new itineraries, priority booking for on-board activities (like Palo or the spa), exclusive "welcome back" gifts in your stateroom, and dedicated check-in lines at the terminal. Higher tiers like Platinum and Pearl offer more significant perks, such as a complimentary dinner at a specialty restaurant and even earlier access to online check-in. Additionally, you can get perks by being a Disney Vacation Club (DVC) member, booking through a travel agent who offers onboard credit, or using a Disney Visa Card to pay for your cruise, which often provides discounts on merchandise and specific photo packages while on board.