I had a great time meeting everyone, and playing guest bartender for the evening.
Still not sure why I let nor4 sneak out with the remainder of the 95 Sterling Cab, but here's hoping it doesn't go to waste.
While I'm sure I'll make it out to other happy hours in the future, and pop in on some of the out-of-towners, the Georgetown Five Guys is always available as a location if we want to revisit.