Maybe just try not to worry about it until it happens, if it happens. I know you said you are going in July. Worst case is you'd have to put a mask on indoors, and I don't know they would even do that again. And if they do, so be it.
I get it, Delta was crazy in Florida before we went in October and I was getting nervous, but I just figured we'd be masked indoors and we were. Weirdly it was very hot and very humid for late October and while the masks weren't my favorite thing, it was fine.
What I would not do is miss the next 4 months of my life worrying about what will be happening in July.
Enjoy today.