Bumblebee,
Not sure I can follow you. You've got a job that does not allow you to consume alcohol in quantities which may leave you unfit for duty the next day. If, due to the reasons you point out, that is a problem, then maybe flying short-haul / multi-sector is not for you?
M.Mouse
You remind me of OCB,looking at technicalities rather than the "big picture". And you may wish to deny this to yourself, or whomever else you wish to impress, but the habits among certain crews is well known in the community. You may wish to close your eyes to these things, and pretend they'll just go away. I won't. I have no axe to grind, on the other hand I am not a member of the silent service.
I will not do the searching for you, but go back through the library right here. From the top of my mind there was 2 or 3 crews in the US and recently, and the LH guy in HEL springs to mind. Perhaps they were/are all innocent, never the less brought themselves in a situation where they came under suspecion. Merely bringing one in a situation that may be suspect is stupidity made large in this business. But you already know that don't you?