I think it's hard to predict. We did a day trip to a zoo in the Florida Panhandle today. We go every year, we pulled up today and it was way more packed than I have ever seen it, at least on a weekday in the summer. I suspect there's so many other things that people use for entertainment (movies, trampoline parks, etc) that are closed, that there is going to be a high demand for those things that are open as long as there's a disparity.
Interestingly, other than the workers in the gift shop and snack bar wearing masks, it was like nothing had ever changed. Didn't see a single guest wearing a mask. They have a train ride that goes around the zoo. It was packed to the gills, every row taken with no instructions to social distance. Just had to laugh thinking about all these discussions here and how people still won't feel safe at Disney. Those people would've never even made it out of the parking lot at that zoo today.