50 Massachusetts Ave Ne, Washington, DC
Shake Shack is a comfortable venue and has welcomed us with open arms. You can buy beer or wine, ice cream, burgers, hot dogs--and they even have some vegetarian options. It isn't crowded on a Wednesday night and we have plenty of room to spread out.
Buy something downstairs and bring it up. If you don't want to buy anything, you can get away with it here, but I encourage you to get something small as a courtesy and so we don't wear out our welcome.