I can totally see both sides.
I'm a beginning wine drinker (I'll be 22 on Wednesday) and it is a NICE beverage. I can't take it full strength *hangs head with shame* but it is nice with dinner. I would actaully love to have a 1/2 and 1/2 (1/2 wine one half soda, fruit juice or seltzer) at the Blue bayou. Nothing like kicking back after a long day at the park.
I can also see how it would ruin the familyness of Disneyland. Some people would definitly ruin it for others.
How about serving wine with dinner only? Heck, they could even have a 2 glass (or so) limit. I would imagine that families with younger kids leave Disneyland before the park closes (??). I'm not very Disney educated in this area.
Hmm.. tricky one. Good post though, it got our juices flowing!