May 4, 2016 - 7:16 AM
The Regional-Pass Bernese Oberland is not good from the Swiss border, that's why you need a ticket to first reach the region (please see the last bullet in my previous post). The map shows the correct coverage. If your pass is valid on the incoming/outgoing days, you only need a ticket to the first town within the covered area. The pass is not relevant for that part of the trip. Tickets to/from Germany can be purchased here.
I wouldn't rent a car in this case. You can park it in Interlaken or Grindelwald, not in Gimmelwald. Parking is indeed paid unless the hotel includes a parking place. However, most good locations can't be reached by car so it would sit in the car park for most of the time. Also, the airport in Zurich can easily be reached by train.
Does this clarify things?
Last modified on May 4, 2016 - 7:17 AM by Annika