This is the second round of layoffs at the resort since it reopened in June.
The hard-ticket event will open only part of the park and six rides, including three coasters.
Turns out shutting down theme parks for months isn’t very profitable.
The Taste of Knott's festival will run Fridays, Saturdays and Sundays from Aug. 21 through Sept. 13.
Busch Gardens Williamsburg is one of three SeaWorld-owned parks that remain closed.
The new policy also bans face coverings with mesh material, which have become a favorite of anti-maskers.
Disneyland's theme parks have been closed since mid-March with no reopening in sight.
“I know this news is disappointing especially because this year we would be celebrating HHN’s 30th anniversary,” said Universal Orlando Resort president Bill Davis.
“You may remove your face covering while actively eating or drinking, but you should be stationary and maintain appropriate physical distancing," Disney's updated policy states.