As of 2026, the policy for canceling or modifying a Walt Disney World theme park reservation is generally quite flexible, allowing guests to cancel up until the end of the scheduled day. However, to be considerate and to free up capacity for other guests, Disney encourages canceling as soon as you know your plans have changed. If your reservation is part of a vacation package, the broader package cancellation rules apply (typically requiring 30 days' notice for a full refund or at least 2 days' notice to avoid a heavy fee). For individual day-use reservations linked to a standard ticket or Annual Pass, you can simply go into the "My Disney Experience" app and cancel the reservation at any time before the park closes. It is important to note that unused reservations expire at the end of the day and have no cash value. For Annual Passholders, failing to show up for multiple reservations without canceling may result in a "no-show" penalty, such as a temporary block on making future reservations, a policy designed to maximize park access for all guests.