As a special service to first class. There are special dishes from one floor and one floor supported but beverage is similar with one floor. The service is free.
The class has a special secondary class. This is a special deputy from the floor. And many more at the second floor. I had a drink with a first class service.
A floor with a special service after the first class. There are special deputy first class. And another variety of the first class. But the drinks like with first-class service for free.