I went to AEA in SF last December, and plan on going to it again.
I think you’ll walk away with your mind appropriately blown. Keep an open mind and let it all soak in. I’m sorry to see that Austin doesn’t have Mike Montiero as a speaker, but they do have the video of a couple of his talks online that will change your point of view (at least they did for me):
How Designers Destroyed the World: http://vimeo.com/68470326
What Clients Don’t Know and Why It’s Your Fault: http://vimeo.com/88764543
I wish I could get to the Austin one though, I miss real BBQ.