This was a great post by STEVE.W and I always point customers to this thread when they are asking for advice for driving from UK to the Islands and not just Crete. I tell them just to cross the channel and head to Luxembourg to pick up the route.
To go down through France on the tolls is maybe the easier and most costly way and going through Swiss is OK if you are not carrying much personal effects (customs) and basically looking just like a tourist in a car.
But I must stress about getting the Vignette in Austria, it does not cost that much for a few days and they will come down heavy on you if you have not got one.
We get the yearly 80 euro vignette for each of the vans but that did not stop the Austrian Rozzers for relieving the driver of 120 euros on a routine stop. For the Vignette not being stuck on the windscreen in a correct way only 30 minutes after he bought it in Jan.
If they stop you, they will try their best to find fault with the vehicle or your Docs…….
After hundreds of trips going every way possible to most of the Greek islands. The past few years we have found this way the most cost effective………