It's in November, and they'll have info on 
www.iaapa.org  at some point.  
Sure, shake hands with your heroes, just keep in mind that they're there to sell rides.  
I do think it's OK to mercilessly consume free samples of food and Coke (even if Coke didn't have booth babes like Pepsi did).  
------------- 
Jeff 
Webmaster/Admin - CoasterBuzz.com