Plenty of DVC remembers would roll with it. If I had a reservation in that time period I would keep it and finally try out Universal. I would suspect any restaurant attached to the resort would be open, at least QS, and there is DS. Plus DVC members do cook in their villas (though we’ll have to see what Disney chooses to remove from the villas since it was rumored cookware would be removed).
Most DVC resorts are reasonably good to hang at. Sure, if it was a park-focused trip, there would be some re-evaluation, but many DVC members will only visit the parks over a couple of days of their stay. I specifically booked AKV for my stay in August just in case parks would be very restricted. That would be a great place to hang for a much needed escape. The only reason I’m wavering on it is the unknown about the Florida quarantine expiration for NJ residents and that friends have bailed and are opting for Savannah instead.