Most real alcoholics hide it from the rest of the world, the people I think you are talking about are probably binge drinkers that once they have had too much, (but can never realise it), make an absolute exhibition of themselves and all around them.
I would willingly rather go on holiday with an alcoholic rather than a person that turns to a stranger and ask's in a threatening manner, "Who you looking at?",
they , are dangerous!
