Looks like they are store right here, behind the Magic Kingdom on the very northwest edge of property.
https://www.google.com/maps/@28.4181295,-81.5980279,499a,35y,355.78h,38.09t/data=!3m1!1e3
I was a bellhop from 2001-2005. Started out on the College Program and then went seasonal. Because I was an engineering major, I also frequently signed up to work as an assistant with the overnight maintenance and engineering crews, as well as gave behind the scenes technical tours. I also...
The screams are 100% real. I've ridden the attraction alone hundreds of times, as well as witnessed it operating empty from the ground on countless occasions, and there are no screams when this happens. So not only are you hearing real screams, but there also isn't any kind of sound...
Disney has decided to do away with the Campus Rep program, so as of August 1 I'll no longer be a cast member for the first time since 1999. A little sad, but I suppose it's time to move on.
That said, I'll be taking my last trip to WDW as a CM in July for the Tower of Terror 20th anniversary...