Honestly, nothing too crazy. What drove me nuts as a Mac Genius was the opaqueness of the engineering and support organization- we were on the front lines diagnosing and fixing customer issues, and we could do escalations, but it was still hard to get any answers from higher up that weren't already in the official docs. I'm sure there's other stuff I'm forgetting, but overall it wasn't a terrible place to work considering it's retail.
Tell all? Does this kid think they are just paying him to hang out? Retail is retail kid, you either drink the kool-aid or become a customer. It's called a J-O-B.