Restaurants and coffee shops
Sit-down restaurants, bars and branded coffee chains in airports usually code as eating places.
Many are run by concession companies, but the restaurant location still usually carries a restaurant code.
Self-order kiosks inside a restaurant code the same as the restaurant.
Where it changes
Newsstands and grab-and-go shops usually code as convenience or retail stores, even when they sell sandwiches.
Airline lounge day passes code as the airline or lounge operator, not dining.
Food bought on board a plane codes as the airline, so it may earn the travel rate instead.
Which card to use
At a restaurant, use your best dining card.
At a newsstand, use your best flat-rate card.
Abroad, use a card with no foreign transaction fee before anything else.
