I posted this elsewhere, but here are the numbers for hotel capacity:
DLH: 973 rooms
GCH: 948 rooms
PPH: 481 rooms
Total official room capacity: 2402 rooms
Assuming 5 people per room (suites are included in that number) 5 x 2402 = 12,010 on-park guests.
Unofficial DL maximum capacity = 75,000 (LA Times)
Unofficial DCA maximum capacity = 33,000 (various)
So even with with packed full hotels divided by DLR's carrying capacity of 108,000 guests, you only approach 11.1% of capacity.
Based on Florida's theme park task force guidelines, opening at 50% capacity means you can allow up to ~42,000 non-DLR hotel guests people into the parks.
It'll be interesting how they're going to equitably implement this with the numbers of outstanding DLAPs. They're going to essentially have to treat every day like Christmas week, except worse because at least during Christmas, every pass except the top tier is blocked out.