I will on my way to the Hyatt now. Don't listen to anyone about DC being overly dangerous. It is no more dangerous than any large city (LA, Detroit, Baltimore, Philladelphia, etc). You can get scammed anywhere, so you should alway be on the lookout, but I have never encountered that around here. One rule of thumb, which is actually true in many towns, is that the northern parts are better than the southern parts. Northwest and Northeast are nice and Southwest and Southeast are not so nice. So keep that in mind.
I look forward to seeing everyone there.