Fantastic pictures and report Herrie. My wife and I (plus small dog!) did The Pyrenees soon after we had taken delivery of our M3W in 2015. An unforgettable trip on fantastic roads.
We took the ferry from The UK to Bilbao. This cut out a lot of driving on 'ordinary roads' if we had gone all the way down through France. Driving a M3W on mountain roads can be quite exhausting, so we found the overnight trip back on the boat a welcome rest.