As others have mentioned Festival of the Holidays will be happening but as far as other "booth like" but not QS locations outside or even during festivals. Here is what I can think of off the top of my head (take with a grain of salt I'm not young).
The margarita stand outside of Mexico, you can get drinks and a few food items.
There is a little tea stand outside of China, I don't remember if they offer food but I think they have eggrolls.
Beer cart in Norway, maybe bag chips?
Little food stand in the Africa section, they offer food and drinks and special food during festivals.
Beer cart outside of Germany has pretzels.
I can't think of any food offerings in Italy but they do have a wine store that offers tastings.
Morocco has a little walk up window in the outside shops, I know they offer drinks, not sure about food.
There is a little sake/wine stand in Japan and a little stand that offers kind of shaved ice, I think I remember getting edamame there.
France has a little stand that offers drinks and maybe ice cream?
England only has the fish place.
Canada has a popcorn cart that has different flavors of popcorn and a beer cart.
There are a few Joeffry's locations throughout the countries that always have sweet things, coffee and adult beverages. There is a refreshment port type place that always has poutine and french fries, etc. it has special offerings during festivals.
There is a funnel cake shop (maybe two) in the America section.
