We are a family of 5 traveling between the French Alps and the Swiss Alps this summer. We are specifically interested in traveling from Chamonix, France to Grindelwald, Switzerland. It appears that there are numerous options, many of which involve relatively long train rides with quite a few transfers. So....our question to the community.....what is the BEST way to do this, considering a trade-off between cost and time? Train? Bus? Rental car?
If rental car is the preferred option, how does this work? Are we able to pick it up in Chamonix and drop it off in Grindelwald? Or must we drop it off somewhere else (i.e. Interlaken Ost area)?
Can someone please point us to a specific car rental agency, or a specific bus/shuttle service that you have used to do this trip?