What area of the city will you be staying? If you're close to Bin 36, you might want to try Frontera Grill, home of Mexican Chef Extraordinaire Rick Bayliss. Even on a busy Saturday night, you should find seating at the bar, and the bartenders there are very friendly. Another good spot in the area is Naha, and they have ample bar seating as well.

http://www.fronterakitchens.com/rest...staurants.html

www.naha-chicago.com