Hi Salim
Thank you for your request.
For the purchase of tickets and reservations, I advise you to contact our Contact Center directly. The phone number is the following: +41 848 44 66 88. With a credit card, my colleagues will prepare all the necessary tickets for you and you can pick up the tickets at a ticket office in a station within Switzerland before the departure.
You can also go directly to the ticket office during your stay in Switzerland.
I wish you in advance a pleasant stay in Switzerland.
Best regards
NicolasK