Disneyland attendance was flat in 2019, according to the latest TEA/AECOM Theme Index.
The hard-ticket event will run for only two weekends from July 17-19 and 24-26.
Disney had previously said it would cut $900 million in planned capital expenditures due to the COVID-19 pandemic.
The rule change is due to the city of Winter Haven, Florida passing a face mask ordinance on Monday.
Orange County Mayor may ask Disney World to “reevaluate” reopening if COVID-19 outbreaks are tied to theme parks
Mayor Jerry Demings also said there's no indications that other reopened theme parks caused an increase in COVID-19 cases.
The dark ride was only weeks away from opening when the COVID-19 pandemic shut down theme parks in mid-March.
Even during a pandemic, some guests appeared to go to Magic Kingdom solely to buy piles of merchandise, likely to be resold later.
Crowds were light, face masks stayed on and reminders of the new safety measures were everywhere.