There are only two rules of Set Etiquette for Camera Assistants (and everybody else on the crew):
Rule #1: Keep Your Mouth Shut!
Rule #2: Stay in Your Own Department!
Unfortunately, I never mastered these rules, and am constantly getting myself into trouble. Maybe you will have better luck.
Rule #1 has more to do with career insurance than etiquette, but it is an important concept to understand. I have rarely been able to resist the temptation to let some fool know that I know he is a fool. I often do this loudly, and in front of witnesses. Tact was never my strong suit, and neither is tolerance for incompetence or injustice.
Unfortunately, these demonstrations of honest indignation have a nasty ...