I think the real trick on the autographs is who you are going to try to get. The stars of the movies - the headliners, if you will - Ray Park, Anthony Daniels, Jeremy Bulloch - really anyone who was a major character in the movies - are going to be in high demand. Sadly, as fantastic as the Clone Wars cartoon show is, and as awesome as those stars are, they are not "face" stars. They are voice actors. So, the general public may not always recognize them or how cool they are.
Of course, there are lots of folks who are just walking up and see the cool stuff going on - they may not know who the Clone Wars folks are,either. I have spoken to many people who are going down during the SWW event, and have no idea that it is going on. That puzzles me, but, I digress. The casual autograph seeker will just go for the first really recognizable guy they see.
Just some observations from conventions that I saw at work last year with the crowds.
Ash