Oh gosh NOOOOOOOOOOOO! I work in a "Big Box" retail establishment (hint, hint), and the very last thing I want to see when I get up in the morning, on my time off, ---is the sun coming up over a WalMart sign.

Since we like to travel the "old road" alignments, back roads and do our best to avoid the interstates ("Friends don't let friends drive the interstate!"), we're going to be passing by Walmarts (or other large lots) anyway. Most of our one or two night excursions are within reasonable driving distance. We'll plan accordingly should we make a cross country or multi state trip.
In defense of Walmart lot camping, yes----most Walmarts allow RV parking overnight. My Walmart used to have "No overnight semi or RV parking" signs at each entrance (local town ordinance), but the signs disappeared years ago. Meanwhile, there's plenty of rigs parking each night on the outer fringes of the lot. Doesn't seem to be a problem unless you unload all your chairs, bicycles, grills, etc (like a small convoy of RV trailers recently did) and block a parking lot lane of traffic. What were these people thinking?