Calm down a tad!!!! Just keep a lookout for autograph days, eventually he'll be out in force, and get there early and line up.
i've been to 3 autograph days, typically it is relief pitchers or guys who are hurt. Last time we went it was h-rod, coffey, laroche (rehabbing) and slaten.
Your best hope is to get to a game when the gates open and go down to field level during BP. Otherwise, you can stand at the exit for the players parking lot and hope he'll sign, but there's usually a mob of people and it's only going to get worse.