Ever been to Disney World in July? It's not quite that bad but it's bad enough. Try late May or early June if that fits school schedules. Otherwise, it's a roll of the dice.
We come here quite often but rarely in mid-summer. Last time we were here for Fourth of July was in 2020 and it was the first place we went after Covid hit in March 2020. I'd been teleworking from home since we got thrown out of the office on March 16. We came down here to test out teleworking from someplace other than home, which turned out to be a success. Like most places, everything indoors was closed (fitness center, billiards room, computer room, etc.). The main pool was open by reservation with two hour intervals -- 90 minutes for patrons, 30 minutes for staff to wipe down. It all seems so silly now, doesn't it?
If you can work it out, Williamsburg is a great little town. So much of early American history took place in this area.