Hi I have just returned from a trip to Interlaken. I don't think you will find your trip through Switzerland boring, anything but I would say. Yes, you do need a Vignette which is a pass you attach to your screen, I believe they are around £30 it depends on how long you are going for but I bought mine off e bay for £8, make sure they are not damaged in any way. You .do have to stop if requested at the Border and it is the first thing they looked for, with me. I did hear they are trying to hike the price up this year to 75 euros but check first. This was my first time on such a fairly long trip and my trip was from Dunkerque, down the A25... E16 through Lille, E42..A15 to Namur and then down the A4..E411..E25 through to Luxembourg( you must arrive here as empty as you dare) diesel here was the equivalent to £1.03 per litre last week I stayed in a campsite in Arlon,approx 250 miles from the port. It was about 15 euros. I then made my way onto the E25 down to Metz and then across on the A 4...E25 to Strassbourg and E25...A35 to Mulhouse
And onto my destination Grindelwald in the Alps.
The most boring part by far was on the Belgium roads, with recent heavy snow there were pot holes galore and were like rumble strips. the other problem I encountered was in the bad weather and with a safe comfortable cruising speed of 60/ 65 on the long haul up on the motorways you were almost forced to have your foot down or stay in the precession of huge HGV's. The intake of their exhaust was very apparent, so switch over to your air re circ. The one thing I was very aware of you were definitely going up to Switzerland and on the way back, you were on your way down. The only tolls I paid in Belgium were 12.60 Euros and another of about 6. On one toll you take your ticket out and pay when you come off. (12.60) the other one was different, there's no ticket and you pay with your card it's a fixed price.....make sure you you put your card in the right way..otherwise it rejects your card , without explanation. This did happen to me so gave a few hoots and someone came to help.
Tips for trip....Make sure you take enough Propane( if travelling in the winter months) or purchase the fitting that allows you to use their bottles. Tyres.... Check carefully the laws regarding tyre types for each country you are travelling through and you are legal.....Hi Viz jacket, warning triangles and breathalysers are a must.
Feel free to contact me. I had a few more unforeseen problems ....I did learn the hard way .
Good luck with your trip