We are driving from Calais to Benodet in South Brittany on Sunday with DD(4) and DS(2).... Has anyone done this journey in one go, how long will it really take (the mappy website suggests it will take about 7 hours, is this reliable?) - and can you recommend anywhere decent to stop en route for picnics, loo breaks, and letting the kids run around for a bit? I would really appreciate any recommendations.