Well, if you scroll down the Sakura-con forum list there's a forum that was already started on Vocaloid : D I'm sure if you post there you'll find tons of people willing to hang out with you in Vocaloid.
I myself am going as Meiko and my gf is going as Rin. ^^ I'd be more than happy to go into a skit myself. I dunno about my girlfriend though, I'll ask her.
I'm the superhyperactiveknucklehead of Port Angeles, I have no indoor voice, and if you don't like then I really just don't care. Cause I'm loud, confusing, proud, gay and a stud.