Autograph tips?

So I am going to probably my final game of the year on the 22nd vs Washington, and REALLY REALLY want at least Gwallace Autograph, any suggestions or tips on where to go, who to talk etc to try and snag some?

When I used to work there back in highschool, I recall Sheed driving out the parking garage and some ladies stopping his vehicle and he obliged them with his crooked smile and autographed their tshirts....smooth cat. :}