Yes, you can generally change the date of your Disney park ticket, but the process and cost depend on the ticket type and availability. In 2026, for Walt Disney World and Disneyland Resort, you can use the official app or website to modify your ticket's start date as long as the ticket has not yet been used and hasn't expired. While there is no "change fee," you will be required to pay the price difference if the new date is in a higher-priced tier (Disney uses "date-based pricing," where weekends and holidays are more expensive). If the new date is cheaper, you generally do not get a refund. For Tokyo Disney Resort, tickets purchased via the official site can be modified for the date of visit or park through the "My Booking" section of the app, provided the new date is not sold out. It is crucial to remember that a ticket change does not automatically update your Park Reservation; you must ensure that there is both ticket validity and reservation availability for your desired new date to ensure entry.