A rant about common courtesy to your neighboring campers

Let's back off on the arguments please. The issue in the Op isn't about basic idling, it's about excessive idling. Running it for 5 to 10 minutes to warm it up, get the cab warm, extend/retract slides, etc., isn't a big deal. Leaving it run while you put away the flamingoes, gnomes, name signs, 400 lights, and so on is rude.