Hello! I bought the half fare pass for myself and my daughter and I don't understand how to use it ahead of being in Switzerland. I want to buy tickets online for some of the routes and it keeps asking me to register with a customer number, but for the life of me I can't find it on the pass I bought, or figure out how to get it! When you purchase tickets online, are they half price already and then you show your pass on the train?
Thanks for your help, feeling quite dumb at the moment!