Using a Saver Day Pass except for at the lift at Oeschinensee (36CHF roundtrip)
this went as follows:
Wengen to Lauterbrunnen to Kandersteg to Oeschinensee lift to hike to Lake Oeschinensee to Bern Jazz Fest to Geneva to Annecy
FYI: they sell Jack Daniels no 7 (wink wink) in pints at the Kiosk shop at Kandersteg station.
Here are some photos
https://photos.app.goo.gl/WSYpifW59MLQPPFJA
I would advise only to try hanging out in Annecy on a week day and not in summer judging by the crowds here in mid May.
Also I did biometric entry into Amsterdam no stamping and leaving Geneva there was passport control with a live person scanning the passport with phone and no stamping.