I used to be that way - flashback to my days watching them work on my Acuras at Sunnyside. The good news is that the techs know who you area, and can give you some special attention. The bad news is that if you bug them too much (or get over-zealous in your "watching"), they can purposely do "things" that you may never find. So it's a double-edge sword.
As I've gotten older and started looking at cars as "necessities of transportation" as opposed to "treasured trophies", I do the things to the car that I can (oil changes, rotate tires), I pick the shops to do specialized things that wouldn't be warranty (like buy/mount tires), and then rely on the dealer to do warranty items and just let it happen. I don't have the time nor patience to fret over whether they're doing things "right" any more.
That being said, I try to pick a dealer where there's a good service department (references), and then bring ALL my hondas there for service. If you're a repeat customer, they're more likely to treat you right to get more business, as opposed if you're a random service visitor who's paranoid....
