The days of just showing up to Disney World on a whim and getting easy entry are long gone. Due to the COVID-19 pandemic, Disney World is requiring guests to make advance reservations for its theme parks, and there’s not quite enough to go around.

From March 13 to 19, there are no available slots left for Magic Kingdom, Animal Kingdom, Epcot, or Hollywood Studios. According to CNN, Magic Kingdom doesn’t have any availability until as late as April 10.

Visitors are required to have a park reservation and valid admission for a specific park each day they want to visit, and given park capacity limits, those reservations are hard to come by. The lack of availability is also likely due to the upcoming spring break, as well as Florida’s relatively loose COVID-19 restrictions, making it an attractive vacation destination.

Disney World was limited to 25 percent capacity when it first reopened from the shutdown, and that has since increased to 35 percent. Disneyland in California remains closed, though there are plans to potentially reopen in April.