My one and only time of actually encountering the real (not just loud) drunks was during the one and only time we were there at Food and Wine... not only were they very loud, (swearing continuously), obnoxiously drunk, there were several strollers in the group, with small children.
I am NOT saying everyone who drinks a couple drinks are evil people, nor the folks who can have a good time without affecting others around them. I do love my Grey Goose slushie! But one is plenty for me, or I too will need a nap!
My biggest complaint is that one of the groups we encountered was so loud and obnoxious (in the Rose & Crown Pub) that we couldn't even hear the server, or each other as we tried to dine, and Disney security folks just kept circling without intervening in any way - like just their presence would matter at all to the unruly crowd. We ate quickly, and left Epcot altogether.
When one groups' "FUN" encroaches on other people who have paid just as much to be there, that is not right, and should be dealt with.