Mine happened different years during Hallofun (or whatever it is they call the October event). First time, at the end of the the night, the op "accidentally" overshot the train past the loading/unloading point, so we had to go around again.
Second time was this year. It was one of the first trains dispatched for the evening, and there weren't a lot of people in the park yet. When we got back to the station, there was absolutely nobody waiting in the queue. So instead of letting a train that was just tested sit idle, they sent us through another lap. Next time we returned to the station, there were enough people waiting to keep us from getting the three-peat.
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