The reception is at Park Tavern. I haven't been inside before, but I'm from Atlanta, so I know where it is at. I think it will be beautiful!!
As for the dress search....
I have talked with a million different people who all have different opinions on wearing a black dress to a wedding. I think the consensus was that the young and fashionable are all wearing black dresses to weddings these days. So....right now I'm leaning towards a black dress I found that has long sleeves, but with slits down the arms, that way I'm not too cold and not too hot for the wedding/reception.