The new movie will be an addition to three already in rotation at the Fun Town Theater.
Legoland Florida will scale back distancing markers to three feet starting May 14.
Disney CEO Bob Chapek said the resort will need time to call back and retrain thousands of Disneyland employees.
The park will be built on a 4.5-acre parcel of land that is currently part of Legoland's parking lot.
Theme park news: Busch Gardens Williamsburg open year-round / Legoland Florida canopy / Renie Bardeau
Busch Gardens Williamsburg will continue hosting limited-capacity weekend events in January and February.
The Electrical Water Pageant will return to Disney's Seven Seas Lagoon and Bay Lake on Dec. 20.
The Holiday in the Park Drive-Thru Experience will run on select dates from Nov. 20 through Jan. 3.
The park will offer $99 annual passes for 2021, matching the price when the park opened in 2011.
The event will run on weekends in October, but be warned: costume masks don't meet Legoland's face mask requirements.