May 15, 2018 - 12:42 PM
You only need reservations if you want to travel on the actual Bernina Express. Personally I would take it one way, and take a regular train back, but taking the Express twice is of course possible. For your goal the regular trains would be best.
A reservation is valid for one specific train, so if you get off that train it will be expired. You can book a reservation when you are in St. Moritz. But, the risk of the train being booked out increases as the travel date gets closer.
Last modified on May 15, 2018 - 12:43 PM by Arno