I disagree 100%. I don't think beer and wine is why BOG is so popular. I think it is popular because of the venue itself. It is a gorgeous space that brings a fantasy realm to live. My family had dinner there a couple of years ago. I am not a pre-planner. BOG was the first ADR we had made in probably 5-7 years, and it took me several tries to get it. Neither of us had any alcohol when we went. We don't need to jump through hoops to get a drink if we want one. We went because we wanted to see inside of the place. It was very nice and I'm glad we went. I would never go again because I didn't think the food was anything special and the prices were ridiculous but I'm not at all sorry we did it once.
As for Skipper Canteen, it doesn't have the built in appeal of BOG. There aren't little girls begging mom and dad to take them in the castle (see also CRT). I also agree that not taking reservations is a problem because unlike us, many guests do pre-plan their meals. Since they can't include this on their spreadsheet, they don't consider it an option. They don't want to leave a meal to chance and hope they get in. And as many have said, the menu is troublesome for a lot of families. There is nothing really kid-friendly on the menu, especially for kids raised on chicken nuggets and mac and cheese (not that I'm a fan of that but it is reality in this country).
They need to tweak a bunch of things. Adding alcohol is not one of them.