Citation? Because Universal could have easily proved prior art according to this and therefore had Disney's patents (NOT copyrights) invalidated. And it definitely is not in the mindset of a corporation to share something like that, ESPECIALLY to their competition.
Wasn't Fastpass first introduced at DL in 1999? That would mean it would have been in development prior to then.
Sorry, I don't have any citation for it. When I was doing my employee orientation at Universal we talked about the Express Passes and I got to talking to the trainers and their sups about the systems. Because I had been a big fan of the UO system back in the day. Also, talking to other friends who worked there during the time and implimentation. From what I understand it was being developed before then, but I don't remember asking the question on roll out date at Universal and I don't remember them saying one way or the other. I do know that it has kind of turned into a dirty secret that not many people know about... you have to find people who were there during that time (and they are fewer and further between than Disney cast members).
I am not trying to defend their decision to make it an open source system, actually I think it was rather ignorant on their part. Like I said before, I know and can see the flaws in both parks. UO has a tendency to just fail at things and let more things slip through the cracks. One of my best friends is now "the guy" working to make sure more and more things don't fall through the cracks. UO is bad at not following through on their systems/ stuff like trying to prove things. It was also easier to just implement the "pay as you go" Express Pass and honestly that is much more in-line with their corporate policy/ goal statement.
If you care I will try to do some more research and ask around to more of my friends who were/ and still are in the park and see what I can find. Also, if I am totally wrong I will admit depending on what I might be able to find out.