There are a lot of places in this country where Wal-Mart is the only big store.
I did it a little different. I got my permit just before the Xmas holidays a few years ago, and my sons (both grown) were coming to visit. So I carried around the house, IWB, for about a week.
Neither of them, or my wife, noticed. One of my sons is USAF security forces, with the attendant police training. After 3 days I told him, and then told him to check me out later. He still couldn't tell even when he knew. My wife and other son still don't know.