When we were before the refurbishment you go into a special door located near where everyone else would enter the ride normally. Once you get in there is a camera and a person will ask you to show your gm id and then let you in the elevator. When you get off the elevator you check in at the desk and there is refreshments and a large window that looks down into the ride and also a wall of windows that look out over the park. Once you are ready to ride they will send you through a door and you come out right at the loading of the ride and get right on. It's a great perk for gm employees!