(Posting my analysis in this thread and not Hollywood's as it wouldn't make sense to have Orlando speculation there)
ICYMI Hollywood's thread, About has posted a scene by scene description (ride spoilers ahead in the link):
http://themeparks.about.com/od/univ...rious-Supercharged-How-Does-the-Ride-Work.htm
This makes things interesting. It doesn't sound like the preshow stuff would work in Orlando as it uses the backlot in the setup. My guess is Orlando's queue is in Dom's workshop and towards boarding Hobbs tells us Owen Shaw is about to attack and we need to move to a safe location. The ride itself sounds like it can easily be done with shorter trams. Obviously we can't have trams the size of Hollywood's, but one section of the tram could work. Correct me if I'm wrong, but each non-driver tram section has 7 rows of 6 and 1 row of 5. If a vehicle of 47 dispatched every 2 minutes, that would lead to a hourly capacity of 1,410 riders. Needless to say, waits would get long fast. If they go the tram route, a vehicle that seats around 70 would work. That would bring the hourly capacity up to 2,100. I'm really curious to see what route they go.