We've only stayed at the Thousand Trails/Outdoor World campground before with another family for a Busch Gardens trip.
http://www.thousandtrails.com/getawa...lliamsburg.asp
The sites were reasonable in size, and most of them are shady. Unfortunately, I don't recall specific site numbers, but I think we were in A19/A20. I seem to recall that the E section was primarily seasonals. Given that we were there to hit Busch Gardens, we didn't really explore any of the amenities at the campground.
My only complaint was that there was a little bit of road noise from I-64 in the area we were in. It was mostly only approaching an issue when the trucks were diesel-braking. You probably wouldn't even hear it in the C/D sections and maybe B section.