Pros
First you learn how to PM games which is cool and all, but it's not as in depth as assistant tech is. First your PM guy, then you're assistant tech. As assistant tech, you get to work in depth with the hardware of the games and rides. Working the morning shift is really nice, it gives you times to fix what you need to fix with the games before the rush comes in. The store that I'm working at it's seen as a management position which is nice because you can do interviews, validations and tons more other cool things that a manager would do. As an Assistant tech manager, I'm currently training to become the Tech manager. All in all it's a great experience, and the first step through the door to becoming a Tech Manager.
Cons
Heavy lifting, you get shocked if you don't turn stuff off properly, and in my case you might get stuck with a crazy Tech Manager that you have to learn from.