The one thing that used to really upset me is people attempting a "hi five" in the station. The CM at dispatch will hit a station stop if they see it... and this could cause the train to time out (not enough momentum for the train to reach the next sensor) So 30 minute downtime because someone wanted to reach out and slap a hand! Standing up was another one that always upset me. The entire queue, and everyone riding on the other trains, had their experience cut short due to the selfish act of an individual. They would usually get the biggest guys to evac the train with the "stander" on it. Most times we could hear the various Guests on the train cussing and yelling at the person before we even got there. Security was always called, and it was up to them and Management as to if the individual was tossed out of the park.