Parking a Truck Camper at a Tent Only space in Yellowstone

I don't see why this would be a problem. The "tent" sites in most state parks and COEs that I've been to were for anyone that didn't an electric connection.

You're going to get 10 answers here that are more opinion than fact. Why not call the park and ask? You'll get the right answer, not a guess. I've found the rangers and staff to be very helpful when I was looking for answer I couldn't find online.