We need to get back to Zurich the same day, So we purchased a roundtrip ticket for Chur-Tirano-Chur from rhb, but only made seat reservation for Chur-Tirano (in the 2nd class panoramic carriage) for now. I am assuming we would also need to make another seat reservation for Tirano-Chur return segment if we wanted to return in the panoramic carriage, correct? But before I make that reservation, I wanted to find out what would be best option to return the same day and is it at all possible to take a different route to Chur from Tirano?
Plenty of seats are still available on the return Tirano - Chur panoramic carriage and we don't mind the cost either keeping in mind the comfort of a 7 year old and my wife I am travelling with if the need be and if there is no other return route . However, how do I determine which side of the carriage would fall on right/left during each segment when reserving? Does the entire train turn around at Tirano or just the engine part? i.e., if I reserve the seats on the same side both times, will it fall on different sides while going and coming back due to train turning around?
Any other tips and advice would be appreciated as well.