Hello.
My wife and I will be staying in Grindelwald mid-September, having traveled from Lucerne, and will be going via rail only to the Jungfraujoch. We plan on purchasing a Flex 4-day usage pass (Zurich-Lucerne, Lucerne-Grindelwald, Grindelwald-Zermatt, Zermatt-Zurich) and are trying to find out if going to the Junfraujoch from Grindelwald will require us to get the 6-day pass instead.
I know we get a discount on the Jungfraubahn, but are not sure if the rail from Grindelwald to Kleine Scheidegg counts as a use of our Flex pass.
Thank you.