Afternoon View - Hillside Check-In Cabin

I've just arrived with my loyal companions Aaron and Chris for three days under the trees at Hillside Campground in the Endless Mountains of Pennsylvania. The guys in this photo have had the site next to ours for the last three summers and we always seem to get here at the same time. It's 75 and completely clear, which bodes for a quite chilly evening, as summer nights so often are up on the mountain. Do they make electric sleeping bags?

UPDATE: I've added a photo of our new tent, which much to Chris' everlasting frustration has more ropes and material than we know what to do with. Experience tells us that this will vex him mightily all weekend.