While I think this is true for the retail chain allowing travelers to
discretely spend the night in their parking lots, sometimes the local
ordinances override the store's hospitality. I know the Pismo Beach/Arroyo
Grande,CA Wal-Mart would be happy to host, but local gendarme keep the
campers rousted and in the direction of for-pay facilities.

FWIW, I've heard K-Marts have also allowed overnight camping in some
locations.

>>From: "Warren McQuiggan" Subject: Re: cross country camping suggestions??

 Any Walmart parking lot, You'll see a lot of RVs staying the night at
Walmarts for free>>