I'm in Flagg right now. There are 2 walmarts here in town. One is "downtown" no overnight parking as it is in a "center of town" shopping center. The center of town one is a very small store, not a super Walmart. The other is out by the freeway, that must be the hunington store, where you can spend the night.
I'm at the kit carson rv park on the business 40, easy in and out for big rigs. they charge $35 for seniors over 65, full hook ups no cable tv, free wifi. it is a heavy forested area. Seems like the try to keep it up, but with the rains, well, nothing is paved. Most folks are pretty friendly and there are some perms here, mostly newer rigs. If you are into the "rv resort parking lot" this is not the place for you, but if you like camping in the forest you will love this place.
Flagstaff, old town, is located north of the 40. Like many rail road towns, there is the freeway, then the rail lines, and finally the town. It sits right at the base of some mountains. Old town on a warm night looks like the big shopping centers in Cali on the day after thanksgiving......
I didn't expect to have to spend 5 days here but wife came down with something. They local urgent care facilities seem to be good. Small town with many of the big box stores present that one could overnight at if needed, but they are spread out!
May your black water hose never break!