Sounds... like a process. That’s the nicest way to say it.
Logistically speaking- MK has tons of capacity but is a cluster due to the amount of people. But can still (usually) fit all. Epcot is better. DHS is the worst due to capacity. DAK is the best.
I’d rank them DAK, Epcot, MK, DHS for nighttime show (DHS fantasmic is perfect though)- again- in terms of logistics.
IoA has the ability to be DAK like in terms of execution, dedicated viewing areas, one large show, etc.
This? Its going to feel very strange for a while.