In all seriousness, realize that you're not working at gaming store, you're working at a store that happens to sells games. With any retail job most of your customers are stupid and rude so be prepared to have your patience tested daily. From what I understand, the corporate strategy is to pull in trades and push out pre-orders and subscriptions. You're probably not going to get a ton of hours either, when I had friends that worked there is was extremely part-time as in maybe 2 days a week but that was some years back.
I'm not a fan of the game gutting or the fact that I rarely get a complete package or disc in good condition there. I'm only ever a customer for extreme deals or as others mentioned, e-rewards gift card redemption. I've been openly mocked by sarcastic clerks at the checkout when buying games like Rez (for not owning a 360 and buying the HD version), Mario DDR ("This game is broken bro, but I'll sell it to you if you want me to), and I was tracking a game down at a store that literally had ZERO organization on the shelves and after about a half hour of sifting through hundreds of PS2 titles I asked the clerk if he could check if they had a certain title, all I could get out of him was "If you don't see it, we probably don't have it" as if he couldn't check the drawer or computer. So no, I'm not a fan of the GS experience and I guess if you want to be a good employee, these are some things you can do.
P.S. - I'd invest in a glitter vacuum.