I'm going to the GH/PC event also. I've read a few reports from people who went to the AMC event in the soap-themed yahoo groups that I'm in.
Have you been to the one in Orlando before? If so, it seems that it's pretty similar. There are pictures and sort of a report on disneygeek.com and there are photos on the abc website for the events.
Let me know if you have any more questions. Maybe I'll see you there!