I believe it has come down to, Why are you staying in a WM parking lot?
To tired to keep driving? Trying to save a few bucks not staying in a camp ground?
If its the first choice, then you are just staying to get some rest,some shut eye to safely keep going?
Then a couch or the drivers seat reclined or even the floor will do,, if you gotta put out the slides and run the generator, Your CAMPING!
If its the second choice and your trying to save a few buck and you gotta put the slides out and run the generator,,,,,Yep, Your Camping!!
use your mobile device or hard copy map and find an approved camp ground! Church parking lots and grocery store lots and Wal Marts are not camp grounds for Rv's or vans!
Plan your trip a little better to include plenty of rest areas that are approved for camping if you intend to stay for more than an hour!
Sad to see but I hope this trend comes to an end soon, sure don't want it in my neighborhood as I am sure you wouldn't want it in yours!!