Reservations are available for regular ticket holders for all four parks every day from December 14, 2020 through the new year.
Disney Resort Guests
The same is true for resort guests.
Annual Passholders have somewhat limited availability, with Disney’s Hollywood Studios and Magic Kingdom full for much of the next week. On Christmas Day, only Magic Kingdom is fully booked. There are reservations available every other day from December 21, 2020 through the new year.
All three reservation types have full availability in January 2021.