On 7th of October, I went a trip from Zurich to Jungfraujoch via Keytours, and I was very satisfied with that.
The weather was also great, so we were able to enjoy the fantastic view of Jungfraujoch 200%!
Especially I really appreciated Yanis, the Best driver & tour guide for his hard work. He took a good care of all the participants all the time. For example, when we came down from the Jungfraujoch, the cable car was broken temporarily. But we were OK because he let us know how we could find another way to come down by train. (People might be in a panic without his support.)
Thank you Keytours & Yanis again, and hopefully see you soon again. :)