by that logic, there should be beer/wine everywhere in MK, since it's normal to have beer/wine with dinner in the USA and in most countries.
Yes, but in very very general terms it's less of a tradition in the US than in France/Italy. Also legal drinking age in France is 16, US it's 21, that shows the different attitudes too. Even in the UK it's not a huge thing and some people often have a cup of tea with lunch.
Personally I would either have the special Slush or the Fanta Melon Frosty. I very rarely need wine with lunch/dinner. At WDW I only had wine at Cali Grill and stuck to Sprite most of the time.
I don't think alcohol is as big an issue as most are making out it is.
If you really need wine with dinner, go to Kona cafe, their menu is close to Skipper Canteen.