Bernina Express and Bus Reservation

Hi,

I bought a Swiss Pass 2 for 1 travel Oct.14 with my wife from Lugano, take the Bernina Bus to Tirano and catch the Bernina Express to Chur.
I have questions : Since I have a Swiss Pass, do I need to pay for the Bernina bus? Do I need to make reservation for the bus and also the Express? How to do it? Are there any charge for the reservation?

Thanks in advance for replies...

Hi Tommyc! The trip itself is for free with your Swiss Pass, but you do need to pay for additional seat reservations for both the bus and the train leg. Information on how to do so, and the appropriate links, can be found at the seat reservation page.