Feb 4, 2017 - 2:44 PM
You're most welcome! Wimmis has a train stop, so actually that's where your trip starts. You will need to switch trains in Spiez and won't touch Interlaken on your way to Basel.
I'm not sure about your inbound route but if you drive via Bern you will almost pass Wimmis on your way to Interlaken, so it would be quicker if you can be dropped in Wimmis or nearby Spiez.