I ride my bike to the local Walmart 2-3 times a week, and always park it inside, behind the grocery carts. There's always a Walmart employee giving out the carts to the customers as they come in, and they've always been glad to watch my bike, which I attach to one of the carts with a U-lock. I did have one Wal-mart employee tell me I couldn't do it, but I told her I own 100 shares of Wal-mart, and was therefore an owner, and as an owner, I could do as I pleased. She gave me a blank stare, and walked away. I don't think she had ever heard that line before. I also take my bike into the local shopping mall, and walk it to the stores I want to visit, parking the bike directly outside, in front of the store. Then I can watch the bike while I'm in the store. I have never had anyone tell me not to do it.