Official word from Walmart about 'camping' at its stores

Most Walmart stores allow a free overnight stay in self-contained RVs in their parking lots. Some stores do not allow such stays. In those cases, signs will be posted in the parking lots. If the signs are present do not stay even if other RVers are there. You may get booted out at 2 a.m.

If you do stay, do not extend your slideouts, do not put down levelers (they can damage the pavement). Do not sit outside in lawn chairs or use your BBQ. In other words, just park in an out-of-the-way area of the parking lot, sleep and leave. Pick up supplies in the store if you need any. Walmart notices this and it helps ensure the company continues to allow such free stays.

Finally, do not stay more than one night except in an emergency.

Here is the official word from Walmart.com about overnighting in an RV in its stores parking lots:

While we do not offer electrical service or accommodations typically necessary for RV customers, Walmart values RV travelers and considers them among our best customers. Consequently, we do permit RV parking on our store parking lots as we are able. Permission to park is extended by individual store managers, based on availability of parking space and local laws. Please contact management in each store to ensure accommodations before parking your RV.