It's so nice to hear of a nice shop. I've found it to be a 50% chance when visiting. There is one that my friend and I call "Rude and Useless" because that is just what they are. One lady is rude and condescending, and the other hasn't a clue about quilting. We avoid it until we've exhausted all other possibilities and they are our last resort when searching for something in particular.
That said, some others are usually very friendly and helpful and some are just indifferent.
That's what makes going on a shop hop so much fun- you get to see all the different varieties. We always patronize the nice ones. :-)