I love to meet up with some fellow FReepers.
From what I hear, a lot of people are planning to come early in the morning. Also, it shouldn't be too hard to get a ride back to the Metro or even the airport from someone in the DC Chapter. We will be in Constitution Gardens to the east of the VN Wall (towards the Washington monument) and on the north side of the circle around the Lincoln Memorial (towards the VN Wall).
The Metro will be open until 2 or 3am on Friday night, so I don't think you'll have a problem with that; we usually leave WRAMC at around 10pm.
P.S. I watched our local news tonight and saw that Gael Murphy was arrested outside the Rayburn (IIRC) Building today, along with ANSWER commie Larry Holmes and some unknown "designated arrestees."
Unfortunately, they will be cycled out of lockup in time to play "spit on the soldiers" on Saturday.