Also if there are trains running, but they not letting people in means that there was a cascade and they are dumping the queue. They allow the people to ride who are in the building once track is reset, and then they reopen once all those people are in the inside queue.
Hopefully this clears up some confusion
Im in the dark on this one. :shrug:
Register on WDWMAGIC. This sidebar will go away, and you'll see fewer ads.