“Can be revoked.” Can being the operative word. They ain’t gonna do squat. You sound really enthusiastic about this, though. Which is kinda strange.
“If you choose not to comply at these places, your membership can be revoked. In this case, it was Sam’s Club. They can and will check your receipts against your goods”
Nope. Not enthusiastic. Just stating that it's an agreement you sign in order to be a member. I agree with you regarding Walmart or anywhere else. I've been asked before to show my receipt and I say "no." But if you sign an agreement to belong to something, then it is incumbent upon you to abide by that agreement. Is it not?