Reservations are required to enter Magic Kingdom, Epcot, Animal Kingdom and Hollywood Studios. To enter one of the theme parks, everyone 3 and older must buy a ticket and make a reservation for the day they want to visit the park through Disney’s Park Pass system. If you have a multi-day ticket, you will be required to make a park reservation for each date of your visit.
Disney recommends checking if reservations are available for the day you want to visit one of its theme parks before booking your ticket. Once you purchase the ticket, quickly go back and book the reservation because space is limited.