Thanks for the report MB, wish I could've been there this time!
what would active publishers want there? listen to the ole pr bull?
I've been to one and they have very limited seating, hopefully for people willing to listen and learn something as I gleaned a few new tidbits when I went. Surprisingly, you may find others attending know something you don't and vice-versa, assuming you're willing to converse (network) with the other attendees.
When I went I found the one on one time with the Googlers was good because sometimes they let something slip that they probably shouldn't, which can often be very helpful. :)
On the downside, I found out that one of the special AdSense codes Google gave me to help narrow down the targeting way back when didn't even exist anymore.