We used to do the same. We looked for the little hole in the wall place with the most pickups parked out front. Always good food and quite often a good conversation with some locals.I am not averse to fast food but any more I'd just as soon skip it than yell into a box to someone that doesn't want to be there to give me something I don't really like. I tend to gravitate to hole in the wall/mom & pop places for unique or traditional/old school stuff. When travelling, whether by car or RV we'll usually cruise surface streets along the way in search of such places and as long as it's not a chain, it gets the nod. It's rare we're disappointed and it becomes a memory rather than just a gut bomb.