My most local LQS does long arming, rents LA machines by the day and sells HQ's. Her husband also does sewing machine repairs but he is self taught so I wouldn't take my machine there for repairs, I prefer to drive a few hours to an authorized dealer.
Another shop is in a bit more touristy area and does nothing but sell fabrics (a very nice selection of quality brand names). She says she sells almost nothing to the locals but sells enough during the summer to keep her shop in operation all year.