Just a heads up - due to the current situation in hospitals and the (relatively) low vaccination numbers: as of Monday, 13 Sept, Switzerland will require Covid certificates (3G principle - vaccinated, tested or recovered) for entry into indoor areas of restaurants, museums, zoos, libraries, events etc. This will be in place until 24 January 2022 (although it can be lifted earlier if situation improves).
Eating outside on restaurant terraces or street stalls will be allowed without a certificate.
They will also start discussing reintroducing quarantine and/or testing requirements for unvaccinated travelers and possible introduction of a Covid certificate for people vaccinated outside of Switzerland.
Not much posted in English yet as this was just announced half an hour ago, but this article should get updated:
https://www.swissinfo.ch/eng/covid-19-certificate--government-restricts-access-to-restaurants--cinemas-and-museums/46930520
Edit: adding press release in English https://www.admin.ch/gov/en/start/documentation/media-releases.msg-id-85035.html