My assumption is that while it will be a very windy and wet storm, it's nothing that I need to worry about. I'm on Capitol Hill and will be driving over, and anticipate a slow drive but one that will take place without any problems, and will park somewhere that's not under a tree. The show will go on, it will be great, the drive home might take a little longer than usual, and might require a little more caution, but it will take place without incident. Parking will be a bitch, but I'll still be home by midnight, glad to have made the trip.
I'd probably feel differently if I lived in Baltimore or the deep 'burbs of Virginia. Otherwise, I don't think the storm is that big of a deal.