homer3 - I didn't see any reference to "inclusion or exclusion" of Sam's Club, so I assume you'd have to get permission (from each store manager) to overnight there.
That said, if a community prohibits overnight RV parking at WalMart it seems likely they'd also prohibit overnight RV's at Sam's Club too.
HappyCamperMN - extending slide out's (into traffic path) in a parking lot could cause a safety issue for inattentive drivers - especially at night.
So, I can understand why a (non-RV-related) business would make that 'stipulation'.
Terri, the Chevy co-pilot