Helga Piur had played Claudia Zimmerman in 'Reizende Ferien'.
Generally music from the West wasn't allowed to be sung in East Germany on television, and yet a cover of 'Tutti Frutti' by Little Richard is played, and Walter comes in singing 'Honey Honey' by ABBA.
Dietmar Richter-Reinick (Klaus) was the son of Walter Richter-Reinick, who played Albert Zimmermann in 'Reizende Ferien'.