Don’t know if this has been sorted already but if not maybe ask Anette if you require the “permit sticker” so you can use the motorways. I had to purchase one every year I passed through Switzerland whether I was there for a few days or a few hours. They were purchased at the point of entry into the country (customs).
There was no options of not buying it as the bloke who always told us to carried a big gun!!!
I am sure you will have a great tip and I am well psd off that I won’t be there.!!!!!
Looking forward to hearing all about it.
Have a Fendant on me.