I've driven by a few times, and have all their music, so now the boy notices and we stop. Clean bathrooms for sure, and all the usual tourist (or local) stuff geared to the location. Worth the stop. Do it.
Clearly if you are passing you need to stop. They obviously get their yooper stereotypes and play well into. Most everything there was worth a good chuckle. Clearly make the stop might be a little weird to some but do it and enjoy