Leave a cam running if you can when in for service, you wouldn't believe the things that happen to customers' vehicles when left for repair. Unfortunately, most "techs" are actually parts swappers, if you're lucky the shop will have one actual technician that can diagnose problems...but then the repair is handed off to the parts swapper. Repair shops can't afford a shop full of real technicians.

Anyway, keep an eye on your ride, they get raced, used for lunch runs, etc, etc.