Cabin crew are generally quite expert at dealing with these prats. It amazes me how often they have to put up with this kind of crap though. An argument about seating or baggage is often just a foretaste of trouble, especially with a couple of drinks to come. Unfortunately, too many CC tell us drivers after the event, once the passengers have disembarked. In these happy times I have no hesitation in dealing with rude / disruptive passengers and will offload them in a heartbeat if necessary, even if it is Captain X. I'd rather do it before a flight than arrange for the Police to meet us at destination.