I will be traveling with my daughter and want to stay with a tour company who will take us to all the places we should see. Aside from National monuments and museums, White House, Capital, I want to go to Arlington Cemetery. We will try to do a night tour on a Friday evening when we arrive. We only have 2.5 days in DC and want to capture as much of the sights in a very limited time. I want to stay with a tour company, so please any recommendations are requested for a winter tour.