Thank you for your request.
We constantly have new promotion for each age group.
The current promotion that we have now from 1 June is the friends day pass only for young people up to 25 years old.
What I could recommend to them in that case would be the following action: Mitfahrbillett: Die Begleitperson reist günstig mit | SBB
Have a nice day,
Kind regards MelanieD