In 2026, Disney's policy for infants remains consistent: children under the age of 3 do not require a theme park ticket and are admitted free of charge. Consequently, because they do not have a ticket to link to the system, you do not need to make a theme park reservation for a 1-year-old at either Walt Disney World or Disneyland. Only guests aged 3 and older, who must have valid admission, are required to secure a park reservation (where applicable based on ticket type). When entering the park, your toddler can simply enter with the rest of your party. However, you should include the child in your "party size" when making Advance Dining Reservations at table-service restaurants, as the restaurant needs an accurate head count for fire code and seating capacity, even if the child will be sitting in a high chair or on a lap. Similarly, if you are staying at a Disney Resort hotel, you should list the infant on your room reservation so they are included in the guest count for transportation and emergency purposes.