Boston - UFC Fan Expo/autograph signings

Who's going (Fri/Sat) and what are you looking forward to?

What's the deal with these signings???

UFC Sponsored Signings - fighters only sign official UFC autograph cards supplied at key locations and are not available to pose for pics (but you can take pics while you wait in line as long as the fighter doesn't mind)... What fighter(s) don't like their pic taken???What exactly are these cards and do they charge for them???

Exhibitor Sponsored Signings - fighters will sign the UFC Expo Program and officially licensed UFC & UFC Fan Expo merch. How much are the programs or do you get them when you pick up your ticket?

Superfights - Any additional cost to check these out or is it just part of the expo?