The two costume designers: Nurse Stacey on the left and Nurse Vicki on the right. Stacey even used her day off to see Ben trick or treat at his school!
That is the Caddyshack gopher which sings and dances to the theme song. He was a big hit with the crowd (and Ben).
We ran into a biker gang. These ladies are most of the administrative staff at the Washington Center. Note the "vintage" bikes in the background.