A relatively small point and shoot is a lot less expensive than a cell phone if you happen to drop it. I really like having a zoom lens. It helps with the photo of the ID sign, the "inside" of the canopy, the photo of the site from across the street.
I only do one gas station / convenience store for Ritter, and if everything is alright, the only photo is one of the entire site from across the street. Doesn't pay much, but fast and easy if there aren't any problems. This is a mystery shop, not an audit. If I find something that needs improvement, I use my cell phone for the photo. Can't stay "mysterious" if you whip out a camera.
Shopping Southeast Pennsylvania, Delaware above the canal, and South Jersey since 2008