Last month we pulled off I-80 in Nebraska at the Cabella's RV site they maintain beside their big store. Just needed someplace to stop for the night on our way back to Jersey. When the RV campground manager asked what hook-ups we needed our answer was none
. She said, well in that case, handing me magnetic key card to their really wonderful shower room/bathroom, there'll be no charge
On the same trip, this time in Iowa, it was getting dark fast and we had to stop, so when signs for Dexter, Iowa also indicated a camping site we pulled off I-80 to find it. This one wasn't beside the highway, but we got there easy. Again, no hook-ups, rudimentary but decent shower room, only three other rigs there, and we paid $10, I think it was, into a drop box.