The D23 is Disney's official fan club for users and customers. Joining the D23 program gives you access to great discounts, offers, and promotions on everything Disney as well as Marvel, Pixar, and other related Disney brands. You can also get 20% off your purchase from shopDisney by signing up for the D23 program. Other benefits include discounts and bonuses at Disney stores, discounts for Disney Plus, and much more.