The most important guideline is: Know the safety rules better than the staff, and know WHY those safety rules are in place. Staff are people, and people do stu

The most important guideline is: Know the safety rules better than the staff, and know WHY those safety rules are in place. Staff are people, and people do stupid things all the time. Unless you know why the rules exist, you're likely to make things worse by disregarding them, and you're guaranteed to amplify any staff screw-ups by following their instructions blindly.