Parking there remains easy early Sat. night (10:30 PM); I have encountered difficulty parking on Fridays before.
This was the first weekend without excessive heat, as the outdoor temperature was in the lower 70s. Plenty of Old Navy shorts anyway, however. Panic over "West Nile" hasn't reached DC yet. I can see it coming, though: I used to live in Dallas. Down there, they have to wear long pants in July.