We are travelling from Colmar to Murren on Aug 30th. We stay in Murren for 6 nights and are using Murren as a base to explore that Region. Then we go to Montreaux for 3 nights to explore that area after which we travel by train from Montreaux to Beaune, France. Is is worth getting a Swiss Rail Pass or would we be better just getting tickets for all the activities (such as mountain excursions, chocolate train etc. ) as we go?