I wonder that too. I know for a lot of incidences mentioned, it wouldn't cause for removal from the park, just removal from the ride line. Things such as fighting, stealing, and anything else illegal will get them out the park.
well not exactly, depending on what all is open ERT can sometimes send the park into the red with the costs of paying operators, running rides, keeping park services working later, etc. It just all depends.
That's gotta be one of my least favorite things. I was waiting in line for BLSC! and I was behind a terrible group of people. They were smoking and drinking in line and I asked them to put it out because for me smoke=choke. They wouldn't. I finally get up to the station and instead of kicking them out of line I had the ops staple the entire group and have security waiting to escort them out of the park. They were all sloppy drunk so that was the real reason they were kicked out.