Went to the one in Austin last week. No need to drag the camera along. At the end of the day they provide a booklet with all the presentation slides on it and info to download some videos. You can take notes, but almost everything was in the booklet. Bring water/coffee. They do give aways based on Twitter posts so bring a smart phone with Twitter app loaded if you want to win a shirt. At the end of they day they do some better giveaways from names on feedback forms. Must be present to win. Books are discounted, and I think you can get the Lightroom one free if you sign up for a year of Kelby training.
Have fun, it was a good day, reasonable pace and break timing. He's good about talking with folks in between sessions too.