Not a direct quote from Walt, but this blog sums up Walt's reasons for not wanting alcohol. Pretty fair assessment of both sides of the argument and he managed to not call anyone losers. Pretty good read.
http://seeyarealsoon.com/2012/09/14/ginandtonicplease/
He pretty much summed up what I was thinking as well. That's why I was digging for a quote where Walt actually said it. Or, did he insist upon it when opening DisneyLand (he wasn't alive to see the end result of Magic Kingdom, so the "Walt said" argument falls flat there too, unless Roy said it)...because he wanted to shut down any ideas his park operations teams might have about tossing in high profit venues, as that's how all amusement options in his day BEFORE DisneyLand operated.
I doubt it was a puritanical belief that booze is bad that motivated Disney. More, how does it impact the story. How does it bring families together.
I took my daughter (7) to Jikos this past trip, and I chose to have a glass of merlot with my Duck. She wanted to feel "fancy" as well, so I asked for an extra wine glass and we poured her soda into it. It became one of her favorite things to do at meals. We had great fun playing "grand lady" at every table service we ate at, and thoroughly enjoyed it. It became a lasting memory that we played with the whole trip, and will stay with us forever. This is what Walt was aiming for.
Does that mean she'll grow up to be an alcoholic? I doubt it. A true alcoholic, functional or not, probably isn't having just one glass of wine or two or even three, he's having the whole bottle and half another.
Does that mean that by witnessing me drinking wine, or the presence of it break the illusion? No, I doubt that too. Especially for a location themed on a scene that literally has singing beer steins and dancing wine bottles.
Magic Kingdom sorely lacks when it comes to Fine Dine, as their closest option is Royal Table. They have no Signature Options at all. I do Royal Table twice every trip (which is annual), and many times I'd have liked to pair my entree with a glass of wine.
I understand why it shocks and upsets people, but I agree with the blog GoofGoof posted...I don't think this is outside of the scope of Walt's vision in any way.
Beer Carts, no way...but I would like them to expand the policy to Royal Table (I guess some would see that as the dreaded booze creep, but here's the difference between, say Crystal Palace, and Royal Table, it's not a buffet, it's a fine dine table service experience You're not eating a choice cut of lamb at Crystal Palace, you're eating industrially prepared cafeteria flank steak).