At the risk of side tracking the thread, let's just lay the alcohol to rest.
Alcohol in a CMV is illegal. Just because the CMV is not moving, does not change or alter this. Whatever is not covered by the FMCSA is usually a part of most companies rules and regulations concerning alcohol.
I'm sure that there are many who do not like this. They should not be in trucking in my opinion. The use of alcohol, and CMV operation/responsibility are simply not compatible. If you are laid over, you still are responsible for that CMV. My 4 years of observation regarding this subject on CAD leads me to hold to one non-negotiable thought about the whole situation:
If alcohol plays such a significant role in your life, such that you must have it to relax, have fun, kill time etc. You are in the wrong industry. Sure, I have my beer drinking moments, but only at home, only occasionally on my 2-3 days off. I would never, ever consider bringing alcohol in to a CMV under any circumstances. Yes! We both know that it goes on. With cameras? Maybe not.
As ct77 remarked to the effect that you could be caught talking on the phone, reading, eating etc. Exactly! We are not supposed to be doing these things while driving.