Are you going to attend? It's a good opportunity to get your voice heard. If you have something to say then get off your butt and say it to their faces. :)
I've been to one of these and it's a great opportunity to give them a reality check of what's happening on the ground. I know of one guy who had his site reinstated into the AdSense program due to a glitch/oversight at Google.
Here is the list of cities that the AdSense show is coming to:
Sacramento, CA Tuesday, April 10
San Diego, CA Thursday, April 12
Los Angeles, CA Friday, April 13
Montréal, QC Canada Tuesday, April 17
Philadelphia, PA Thursday, April 19
Detroit, MI Wednesday, May 2
Columbus, OH Thursday, May 3
Washington DC Wednesday, May 9
Boston, MA Thursday, May 10
Oklahoma City, OK Tuesday, May 22
San Antonio, TX Wednesday, May 23
St. Louis, MO Tuesday, June 5
Indianapolis, IN Wednesday, June 6
Salt Lake City, UT Tuesday, June 12
Denver, CO Wednesday, June 13