I can't, I got called into work this weekend.
On the bright side, I might meet the great Billy Dee Williams. Being a zombie is more fun though.
If you're interested in volunteering for other zombie/horror stuff I'm pretty sure the Frightmare Haunted house they do for Halloween (some of the same people that are working on the movie do Frightmare) need volunteers. I'm going to be bugging them about that this fall.