DD feels you must go to DTD and make your snack from Goofy's Candy Company. We always disagree about what you should make, pretzels, marshmallows, rice krispy treats - oh my!
I have to agree with your DD
MK: Dole Whip Float, Citrus swirl at Sunshine Seasons (just tried this on our last trip and I am now a huge fan of it), Popcorn, cotton candy from the Confectionary, ice cream sandwich from the Main Street Ice Cream Parlor (my favorite is the mint chocolate chip with the chocolate chip cookie). I also will have to agree with the PP that mentioned Le Phew's Brew
Epcot: Caramel Corn from Karmel Kutsch (again just tried this on our last trip and I fell in love), the caramel creme swirl from Karmel Kutsch, Cremed Horn from Norway's bakery, chocolate mousse from France bakery, Popcorn.
DHS: Popcorn, Carrot Cake Cookie, Chocolate/Peanut Butter cupcake from Starring Rolls, frozen lemonade (the one that is a slushy not the minute maid frozen lemonade in a cup that you eat with a spoon).
AK: Popcorn (notice the trend
), swirl ice cream in a waffle cone from the Anandapur Ice Cream Truck