The Drools OSS meetup is having a fantastic turn out, filling the room to capacity. Ray Ploski has taken some photos for me, which you can see below, click to enlarge.
The Europeans, including myself, where not able to be there due to the volcano, so we gave our presentations remotely. After some initial audio problems I've been told the rest of the remote presentations have been fine. The on site presentations have also been excellent, with a good mix of topics, see here.