立ち食いって英語でなんて言うの？

This was very interesting, because I had never heard of this before, but I found an article in Reuters that talked about a new restaurant in NYC with this set-up. I guess it's coming to the US! That article uses the term, "Stand-Up Dining." Have a great day!

Stand up or seatless diner is a restaurant with no seats, so you have to stand up when eating.

In the UK such restaurants are rare or probably don't exist. Such a place would not be given the name of 'restaurant' because in the UK all restaurants have chairs. It could loosely be called a 'cafe' but even cafes invariably have chairs. Such establishment would therefore be labelled by some as, 'A restaurant worth avoiding.' There are sometimes roadside caravans or small mobile huts serving food and drinks to passing motorists - but even these places quite often provide chairs.

Seatless means there are no seats so the customers must stand while eating.

A restaurant that has no chairs Customers stand and eat A: Where are we going tonight? B: To the new Japanese standing restaurant

Japan’s standing restaurants mainly target the country’s ‘salaryman’ population;-D The typical Japanese businessmen, often overworked and renowned worldwide for their dedication to their jobs. Standing restaurants are particularly appealing to unmarried young men who lack the energy or inclination to cook for themselves!