Petterino's at Randolph and Dearborn. The Chef even features a lemonade of the day. Last Friday's was blueberry. They do have a few seats outside. I would call now to make a reservation, if it is a big theater night it could be difficult, but there is seating at the bar. My husband is a fan of the steak salad. There is also a crab louis salad. I adore the fetzel salad and of course the strawberry tall cake with fresh whipped cream.
There is also an Intelligentsia coffee with a few seats outside. It is located at Randolph and Wabash. They have a few panini and salads on their menu in addition to the sweets and coffee, oh yeah they do have Mexican Coke, which is a plus in my world, and southport cupcakes and Ms. Fran's shortbread.
Wow Bao at Lake and Wacker, is a half-block south of the theater and pretty casual. You must love the gingerale, even if it is a tad rich.
Pastoral at Lake and Wabash. The cheese shop makes sandwiches and salads and I think it is open until 8 pm. They have a few seats outside as well.
I am going to the Steely Dan show next month. Would love to hear about the show, off-list of course.