Hello
Am buying a 4 day flex pass, and will be taking the Bernina Express on the last day.  I have bought the reserved seat for Bernina Express already.  Question is:  Given that I have bought the reservation already, will I have to use the day of travel on the Bernina Express as an active day (one of my 4 days?)  or can I use up my 4 days prior to this travel day?  Thank you in advance .  Deb 
That will count as one of your Pass days. The reservation you paid for covers just the seat reservation, not the actual train ride.