If Disney chooses to do some type of daily reservation , I know they may not copy it from Shanghai but I think they will do something, it won't be easy. As far as the reservations go for on site guests they may have 2 options. The first limit the amount of resort guests at one time or they could ask people to choose dates even though they are resort guests. This way they could balance all types of paying guests. I know resort guests are usually get top preferences but I think AP holders are important to them as well. They will have to find a balance. Don't forget they sold reservations for Star Wars at
Disneyland. I know Disney world is much different but in my opinion I don't see how they can control capacity in 4 parks by just shutting them off to people like a phase closing and not upset people. I will say the capacity level they choose to start with will make a difference. I think how long they will have to change and monitor capacity will sway their decision.