When can I blow the all clear? Giving me one after I start would be considered a random, wouldn't it? Don't they have to make you aware that you are subject to randoms?

The only thing mentioned in the literature(for my specific department) I've read is that a medical exam MAY be required. My boss hasn't made mention of that. I asked him if he needed anything else from me(hint, hint) and he said no.
In the literature for the drivers for this organization does make mention of testing(random as well I think) but I think that is required by Federal law.

I can definitely wait till I start but would love to smoke a little for the show the Friday after I start.

I'm not sure I could do the whole subbing thing, I'm a pretty nervous/guilty person as it is, not sure I could pull it off.