Originally Posted by
MikeyBoyAz
I was replying under the assumption that the OP was going to get the tune-up already, and therefore should observe as much as possible while he is receiving the said valuable tune-up to improve his knowledge on said topic. [said... just one more time for kicks]
If that is the case, it would be a very good idea to watch...if they let you. Every shop is set up differently. At my PB, the workshop is behind a counter and a wall. You can't see what's happening in there and they don't let people back there. At another LBS, the workshop is literally right behind the counter and you can see everything. And if the shop is busy, they probably aren't going to want to answer a bunch of questions.