I think that Disney had no intention of opening until Aug/Sept at least. I think that
DVC really forced their hand and to a lesser extent the FL government may have pushed them a bit too. For years and years WDW has been enjoying huge profits due to DVC sales. Now they see that there was some price to those profits. Timeshares are not like a hotel that you can do with as you please. We own that property and there are laws in place about keeping owners out of their property. Once the state of emergency was lifted, they had to open DVC per their contract with the owners.
Universal pushed their hand with the opening of the theme parks. Unni made the decision to open their parks and then did so a short amount of time later. Disney did not even prepare to open the parks no plan at all. They are flying by the seat of their pants and it shows. They make rules that contradict each other ie no resort hopping, but feel free to congregate at the parks or DS. They seemingly want everybody to cancel their cash reservations, but instead of just cancelling them they move people to DVC rooms. Don't think of this as some well laid out plan, they have no idea what they are doing. They don't seem to realize that their IT department sucks and has failed time after time.