Hello, I am traveling from the US with a group of students and I have a group ticket roundtrip Geneva to Fribourg. Our plane has been delayed, do I need to do anything to take a later train on the same day on the same route (Geneva Airport to Fribourg)? It says on the website that the ticket is valid “for ten days” but I wasn’t sure what that meant. Will our group ticket for the 10:35 am be valid on the 14:00 pm, for example?