Hello everyone. I am traveling from Paris to Interlaken. I am going to buy Swiss Travel Pass for 3 days. However, I could not find the option to add Swiss Travel Pass when buy the ticket from Paris to Interlaken on SBB website. There are only Half Fare and GA travel card. Should I buy a ticket from Paris to Basel and use hop on train from Basel to Interlaken with Swiss Travel Pass?
Thank you for any suggestion!