I was in site I-6, looked very similar to your pics. I had my largest wood blocks under the tires and tried to put one more single piece of wood on top of those and it just wouldn't go up on them. We only had two choices supposedly and my wife thought we should have grabbed the one other one we saw unoccupied, but by the time it was pouring rain and I caused the trailer hitch to come upcoupled and it fell on the ground, I was done.
Stone Mountain looks awesome, I thought I read they had a few FHU's. I'm starting to lean away from the "amenities" as my kids are getting older and I'm happier when the facilities and sites are really nice. I really want either wifi or cable though......