I am planning a trip to Switzerland, and will be travelling from Munich to Lauterbrunnen. I am planning this trip for May 2022. I am also planning to buy a Flex Pass. It appears that the fastest route would be to go direct from Munich to Zurich, and then through Bern and Interlaken to get to Lauterbrunnen. If I buy a Flex Pass, do I need to buy a ticket from Munich to Lauterbrunnen, or can I just b buy a ticket to Zurich and use the Flex Pass after that?
If I use the Flex Pass, do I need to make seat reservations on the trains from Zurich to Lauterbrunnen?
I also see that, along with the Flex Pass, I need to buy a seat reservation for approximately 49 CHF. Where and when can I buy this seat reservation?
