A concession stand, or refreshment stand (American English, Canadian English), snack kiosk or snack bar (British English, Irish English) is a place where patrons can purchase snacks or food at a cinema, amusement park, zoo, aquarium, circus, fair, stadium, beach, swimming pool, concert, sporting event, or other entertainment venue.
Usually prices for goods at concession stands are greater than elsewhere for the convenience of being close to an attraction and thus often contribute significant revenue to the venue operator (especially in the case of movie theaters).
Additionally, outside food and drink is often prohibited to incentivise spending at the concession stands.
[1] Movie theaters were at first hostile to food being brought into their facilities, but during the Great Depression, theaters added concession stands as a way to increase revenue in the economically stagnant times.
[1] During World War II, candy was scarce at concession stands because of the sugar rationing going on at the time, and popcorn became more popular than before.