Please help. I have paid for seat reservations on the Bernina Express in July, travelling from Chur to Tirano 1st Class and also travelling back after lunch from Tirano to Chur in 2nd class on the very same day, 1st class seats there, 2nd class seats back. I have purchased 1st class day saver tickets for this day also. My question is, can I sit in my pre-booked 2nd class seat reservation with a 1st class train ticket?, many thanks for reading, Janis