There is alcohol served everywhere with the exception of MK.
What will get you is the price; it will vary from place to place, but expect to pay a lot than you pay at home.
Also, the resorts all have outdoor lounges that are open from 11:00 am to around 4:00 ish, when the lounges open and stay open until about 11:00 or 12:00. Don't discount going to some of the other resorts. They also each have a munchie menu. Wilderness Lodge is one of my favorites, as well as the Yacht Club - beside my own, at POR, bring over the kids around 8:00 pm and they can see Yee-hah Bob; a great entertainer.
Also your resort store will sell a limited amount of liquor (very expensive) to take back to your room.
And Epcot is loaded with all kinds of specialites "around the world."
Aah, the grand marnier slush always comes to mind.
There is even what is called "drinking around the world", but I would suggest doing that on a trip without the kids.