Outside the US pavillion at Epcot are funnel cakes.
Not far from the Dole Whips in Adventure Land in MK is a cart with egg rolls and wontons.
A new place at AK is the tea stand. They have all kinds of hot teas and iced teas. They have some pastries, too.
The best cookies are at the Bakery on Main St in MK. You can get an ice cream sandwich with the fresh cookies and any flavor ice cream.
On the Boardwalk is a cart that sells really good corn dogs.