Overnight RV Parking? Safe?

This Wal-Mart Super center typically have a full time security car riding around in the parking lot. I assume it's not the best/safest side of Albany, Ga. I don't believe they will let you stay overnight in an RV. I have seen Wal-Mart semis spend the night, but that's a giving.

Will not let stay overnight I call them and they said I could.