We fuel at either Pilot or Flying J truck stops. They have reward cards just like most grocery stores. With a fill up of at least 50 gallons, you get a free shower and 1 point per gallon of fuel, (1 point = 1 penny) you can redeem the points at what ever restaurant is in the truck stop or buy stuff from the store. This is a Pilot shower, they tend to be a little more spacious than the Flying J showers but the Flying J showers are more decorated with fake flowers, pictures and stuff. Most are really clean but I've seen a few that aren't :-(