GWCC is most definitely in downtown, but not exactly in a great location foodwise. The closest decent restaurant for hosting a large group is probably McCormick & Schmick's at CNN Center, which is a block from GWCC. Rolling Bones is a good choice, though not very fancy. Sweet Auburn Curb Market is a good choice to experience "real" Atlanta. Serving up plenty of soul food, but it's not really a restaurant. I would highly recommend avoiding Sundial for a meal. Very, very overpriced. You should definitely go for a drink and the view, though. As mentioned before, to get to quality restaurants, you pretty much have to leave downtown. For truly cheap food, some of the best places in Atlanta are Rolling Bones, Fat Matt's, Taqueria del Sol, Vortex, Ted's Montana Grill and Fellini's. Gourmet shops with takeout food like eatZi's, Alon's, and Star Provisions also serve up great food cheaply. With the exception of Ted's and Rolling Bones, none of these places are in downtown.