"Polo-Cockta", the drink central to the film's plot, was a seventies Polish State domestic "communist alternative" to Coca-Cola. In recent years, the product has been privately revived.
A guy with a fez in a hotel lobby says in Turkish "çok güzel" which means "very beautiful".
Juliusz Machulski: in one of the last scenes of the movie (the characters running along the train corridor) one of the guests in the restaurant wagon.