Apr 22, 2018 - 8:06 PM
No problem to do so, but you'll need two seat reservations as you'll board a different train the next day.
There is no need to do both trips on the actual Bernina Express. There are plenty of regular trains on the same route that do not require a reservation. If you want to take the Express it's fine of course.
Last modified on Apr 22, 2018 - 8:07 PM by Arno