The email came more than a month before the first Orange County inspection of Fun Spot's Orlando location.
Disney World is asking guests who can't wear a face mask to reschedule their visits for a later date.
An Orange County team found both parks to be in compliance with county rules on face masks and physical distancing.
The man allegedly hit a security guard after being told one of his kids was wearing an improper mask.
The event will run on weekends in October, but be warned: costume masks don't meet Legoland's face mask requirements.
The new policy also bans face coverings with mesh material, which have become a favorite of anti-maskers.
“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.
The rule change is due to the city of Winter Haven, Florida passing a face mask ordinance on Monday.
Fun Spot America owner John Arie shared posts on Facebook that falsely claimed face masks could cause a harmful buildup of carbon dioxide and oxygen deprivation.