Head to The Great LakesCafe, their soft drinks are $2 and do a $5 popcorn deal with any bar beverage. Everything ordered there can be brought into the theater.
Their coffee bar has good hot chocolate and they even have almond milk (as well as soy) to choose from. Theater is nicely renovated and comfortable, too.
Very cool vibe at the Coffee House. Drove by this place a million times, went in with my wife on Saturday night, didn't see a movie, had a hot chocolate, will be back.
You get a reserved seat at no extra charge - that way you can go to the cafe hang out and you still have the seat you chose. Groovy! The update they did here is fantastic!