Valence Screenwriters Festival
I registered after the deadline, so I couldn't schedule my meetings as well as I would have liked. Despite that, I caught up with friends, met some very nice people, attended some truly enlightening conferences, and had a few drinks—it's been a while.
This festival is very well organized for networking—with pre-arranged meetings and an app for connecting. And Valence—I forget this every time—but it's quite nice.