One of the reasons I enjoy our Disney visits so much is that I get to drink, lol. Since we are staying onsite, I don't have to drive, so get to actually indulge myself a bit at dinner or with a drink as I stroll around the World Showcase.
Yes, some people do drink too much and become a problem, but honestly, the problem folks I've seen have appeared pretty sober, just obnoxious or tired and frustrated or whatever. Don't need alcohol to be rude.
I do like the Magic Kingdom being dry, but must admit that I almost hugged our waitress at BoG when she said they served drinks.