In your Future Plans, select the dining reservation you'd like to update and tap Modify. Update the party size and select the desired date and time for your reservation. If availability exists, it will be displayed here and you'll be able to update your existing reservation.

Yes, you can generally modify the party size of a Disney dining reservation, but success depends heavily on real-time availability. In 2026, the most efficient way to do this is through the My Disney Experience (Walt Disney World) or Disneyland mobile app. By selecting your existing reservation and clicking "Modify," you can attempt to increase or decrease the guest count. Decreasing the number of people is typically easy, as it doesn't require extra space; however, increasing the party size often requires the system to find a new table configuration, which may not be available at your current time. If the app won't allow the change, a common 2026 "pro-tip" is to keep the original reservation and simply inform the Cast Member at the host podium upon arrival. Disney is usually very accommodating for small party decreases, though they cannot always guarantee seating for extra guests who weren't on the original booking.