We had a great pull thru spot (D2) for our one night stay. We stayed one night as a halfway point on the way up and then again on the way back. It seems they have a lot to offer, though we just used the area as a place to sleep. Very friendly staff. Gave 4 stars because the cable didn't seem to work at our site. We didn't stay long enough to try to figure out how to work it.
This was a great place to stay! Close t9 everything D.C. has to offer while being far enough away to be in the woods. We went during the fall, but the summer woukd be an ideal time to go so you can enjoy the water park and bay.