I'm off today to our nation's capital for a friend's wedding. Let me just say that I'm very happy to get a chance to be a guest at a wedding and not be the one worrying about all the little details. Neither Alex nor I have ever been to DC before so we are turning this into a mini vacay. Do you have any must see spots? I'm open to any and all suggestions... shopping, eating, sightseeing, et. al.