I am only reviewing from my one super lame experience at National, be forewarned.
But for reals, we arrived on a Wednesday night and no one was at the door to greet us. We were finally seated at a giant table that we "shared" with someone else and waited 20 minutes for a server to attend to us, and after trying all we could to flag someone, we just left.
The hostess now at the door didn't even acknowledge us as we left.