Great to hear that vloglady!
I actually had a very satisfying experience on a shop today. A few months ago when I did this gas station audit, I reported that in the bathroom, the handicapped railing that a customer in a wheelchair would use was excessively rusty with a picture of it attached. Bathroom was otherwise great, the station otherwise great. I'm pretty sure this was overlooked by other shoppers, since this railing is not really mentioned in the guidelines and I wondered then if I should even include it. This was my first time back there today, and there was a brand new railing in its place.
Like Irene said, we are the eyes and ears of the owners. In this case, I know the owner cares, because the location is otherwise excellent. But this railing clearly was lost in the shuffle. Knowing I made a difference, especially for a disabled person somewhere down the line, is satisfying and more then makes up for those times I return to the same places and report the same things, every single time.