The first day gone quickly so there is a few words of summary.

As this is my first TechEd, first impression is very good. Huge number of sessions, topics and advance levels makes making choice sometimes difficult but anyone will find something interesting. Yesterday's session by Roy Osherove was the pearl. Roy, you rocks!

Regarding social side of the event. I'm introvert so it's pretty difficult to socialise for me. However I'm doing my best to speak with people. I would expect more non-formal evening activities but maybe I just can't find them. Nevertheless summary after the first day is "brilliant".