Go eat at Lucky's. I like to drink at Murphy's out behind CF. The Cubby Bear is at the corner of Clark and Addison across from the Wrigley marquee. Goose Island Brewery is a good place to eat and have some microbrews. Get the 312 Urban Wheat Ale there.
I'll be at the game Monday myself (and Wednesday). Not sure why the hell I'm bothering with the Astros considering I am a Rangers fan....but oh well.
Murphy's pregame is greatness. Cubbie Bear tends to turn into more of a dance club afterwards. You can hit the batting cages at sluggers. Casey Morans is great also, a multi-level bar.
Frankly, you won't go wrong. There are tons and tons of places.