Jul 7, 2016 - 1:39 PM
in reply to Arno
I empathize with the difficulty you are having reading the boat timetables. They do require some study to familiarize yourself!
During Autumn season on Lake Brienz (which includes 2 September) boats leave Brienz bound for Interlaken Ost at 10:40 am, 12:40 pm, 1:40 pm, 3:40 pm and 5:40 pm. The journey takes one hour 13 minutes. See full schedule details at www.bls.ch/d/schifffah rt/fahrplan-brienz-herbst-16.pdf
One way prices are approximately 15 CHF second class, 25 CHF first class. If you buy the tickets for your entire day's journey at the same time there are usually special discounts that apply. In your example, from Wengen train station staff buy Wengen to Brienz (changing at Interlaken Ost) by train, Brienzerrothornbahn return tickets for the steam train up and down, one way boat tickets from Brienz to Interlaken Ost, then train tickets from there back to Wengen. Last time we did this we got a pretty substational price break even with our Half Fare Cards. It also means you buy tickets only once and don't have to think about it again during the day. Tickets are good for any time of day, you are not restricted to a certain train or boat.