As with so many things, there will be a financial calculation to make. Increasing the number of guests will require Walt Disney World to open up more of the resort. They’ll need more hotel rooms, more restaurants, more shopping, etc. And that will likely bringing back more furloughed workers. Disney has always said that making Walt Disney World a net positive financially was important, and thus the parks will want to find the best balance where the money coming in exceeds the money going out, which could mean the park could run at a lower than allowed capacity if it makes financial sense.