RV overnight parking in lot?

I have traveled the nation East Coast, West Coast, the South, Midwest. I Between work assignments, I could choose, hotel, rest areas, or Walmart. Wanting to save dollar. I would choose, Walmart. I was told, over night was accepted. The more distant areas. But, not all Walmarts are 24 hr. Stores. I always chose the stores with security in the parking lot. Touch bases with them. They know best. Some cities have by laws that don't allow the conveince.

I would like to know that as well.

There is an area

I've seen a few there but not really sure if they were supposed to:/

Yes they have some.

I doubt it.It really isn't a big of a place compared to the superwalmarts that I do see RVs parking at