Try showing up two minutes late to Federal Court sometime. You may get more than a demerit.
I had to have an informal pre motion conference in Federal court in Bridgeport, about 1 hour from my office. It was blizzard conditions and the radio was announcing closings, including Federal Courts. All except this Judge and when I walked in 10 minutes late trying to explain about the weather conditions and traffic all he said was didn't I listen to the weather report the night before and make the appropriate preparations. He said sanctions would follow the next time either counsel was late, for any reason, and this was an informal chambers conference.