I went on the zipper once. I waited in line, and when I got to the front, the cage I was about to get into was covered with somebody's burrito they had brought on the ride. So weird. Why would you bring that on the Zipper? The ride operator got a hose and sprayed the whole thing down, but not very well. And I was forced to sit in a soaked cage with bits of refried beans and guacamole stuck to the walls and ceiling. Yuck. It was not the best experience I ever had.
edit: This story is from when I was in junior high, not last night. Just clarifying. :P