Jan 22, 2015 - 5:26 AM
in reply to CarolineJR
Hello Caroline and welcome to the forum!
You are choosing a wonderful time to visit Switzerland and the Bernese Oberland. In early September the weather is usually at its finest and the summer crowds have gone home.
You will be taking lots of high mountain transports (cog trains, gondolas, lifts, etc) to get to the gorgeous scenery and hiking trailheads. And these transports are very expensive, much more expensive than the rail transports that get you from Zurich up to Wengen. Therefore you most certainly need a rail pass. My recommendation is the Half Fare Card, which is reasonably priced (about 120 CHF) and gets you a 50% discount on all forms of transportation in the entire country. You can buy the much more expensive Swiss Pass but this only gets you 50% - 25% off of the high mountain transports (e.g. above Wengen or Mürren). So you pay dearly for the "free" transport up to the high mountain areas and then get the same or worse discounts on the expensive trips. Makes no sense to me.
You don't say who the "we"are, but if you are traveling with children under 15 they will ride for free with the upon-request Family Card. It is free but you must request/order it at the time you buy your Half Fare Cards.
You can buy Half Fare Cards at the major train stations throughout the country or on-line and have them shipped to your home. This site has many good links, just click on "How To Travel" and go from there.
I have written a 45+ page document on Wengen and the area that will likely answer many of your questions. Arno and Annika have been good enough to make a link to that which you can find at myswissalps.com/forum/topic/tips-about-wengen-and-the-jungfrau-region-by-kim