[Expanderoo]

Not a Walmart but we did stay in a Cracker Barrel last weekend for one night. It was a very noisy location right off the highway with a couple of bridges and a train adding to the noise level. But we were all really tired. We fired up the furnace and after I was sure it was cycling on and off properly, went to sleep. This was our first time boondocking and using the furnace (besides testing it) and it worked great for one night using the battery.

Lots of noise, some streetlights and all that but... No problems. And it was great to get up, get some food and hit the road early as it wasn't comfortable sleeping in.

Apparently, Cracker Barrel has a printed guide with all the locations that allow overnight stops. We forgot to ask for a copy. I think we found the one we stayed at on Campendium (website, free).