The parks have not been open with rides or attractions since March 2020.
Contrary to early reports, California's theme park industry is not recommending a ban on screaming on thrill rides.
Disney CEO Bob Chapek said the resort will need time to call back and retrain thousands of Disneyland employees.
Those who don't wear masks, aren't concerned about COVID-19 and supported Donald Trump also said they were more comfortable returning to theme parks.
SeaWorld San Antonio and the two Texas Six Flags parks will continue to limit capacity and require face masks.