I remember getting in a huge line for Ghost Galaxy right at closing (this was during Mickey's Halloween Party). I was the last one in line and they honored my front seat request. (they often don't do preferred seating after closing) It is a great experience being one of the last ones out of the park.
We had an even better experience when we were in the last group to ride soar'n... after the ride ended and about half the people had scurried off as quickly as possible the ask us if we wanted to ride it again because some of the CMs were going to ride it then. We road it twice more before deciding we had had enough. I have no idea how many times the CMs continued to ride it.