I have a formal event to attend in downtown DC on a Saturday evening. I'm taking a date and afterward we're going to want to go somewhere fun, perhaps bringing out others. Problem is that the places I usually haunt would be fine, but not exactly keeping with the well dressed theme. Can anyone think of a place for a youngish couple or crew to continue having fun in the city? I'm thinking of something like blue gin but better dressed and a little less trashy-pretentious. Laid back, but stylish, where a man can drink happily and possibly dance in a penguin suit... But I'm at a loss. Thoughts?