Originally Posted by IAMORGAN

I know it's your area of practice, it's not mine. However, I suspect airlines that prohibit consumption of alcohol say it is a safety regulation / policy implemented for safety reasons to enable the crew to monitor alcohol consumption. Would that be enough do you think? I appreciate it couldn't be something completely capricious like passengers with green hair can't do x but presumably the commander has a wide discretion (again, I appreciate a blanket policy is hardly a case of the use of a discretionary power) but it's an interesting (albeit probably academic) discussion!