First of all, as new campers we were a bit apprehensive about this campground due to some previous reviews. We made our reservation on-line and got 4 nights for price of 3. You need to know that Colonial KOA and Williamsburg KOA are 2 separate campgrounds, although they appear to be owned and managed by the same person. Colonial KOA is on a hill and the Williamsburg KOA is downhill. Both are a bit rustic but Colonial is MUCH nicer than Williamsburg. It has a nice pool and jumping "bag" that kids really seemed to enjoy. Colonial KOA is made up of three different areas. First, there are several sites very near the entrance, then there are a few sites just across from the pool, and then there are a large number of sites in the rear area of the campground. We paid for a "super site" and it is just across from the pool. In this area you can have a pull-thru, a back-in or tents. We are in D-64 and all we had to do was pull right in and our camper was level with no adjustments. In the same area, there are some back-ins with numbers in the D-50's and they appear to be fairly level. I didn't really see any that were too awfully hard to level but some of the sites in the rear could be a little more difficult to maneuver into. These sites are graveled with a little grass and a few trees making for beautiful scenery. I don't have a problem with not having a concrete pad as long as you have a good outside rug and the site is fairly level. Overall, we love it here and plan to return.