We wouldn't be having this conversation if we all just played by the rules and, in this case , the rules are straightforward and simple. Don't ever put yourself in a place where your use/abuse of any substance can endanger the people you are paid to serve. Expect harsh punishment if you do try to skirt those sensible rules. And, yes, I come from a family where addiction has done its worst and I am still in favour of harsh punishments because we need to think of others and not just our momentary pleasures.