Towing to Nice, S. France

I agree Hitch but the OP has boked his ferry!  Digit66, don't be daunted by the thought of the trip.  Driving in France on the Autoroutes is a much more pleasant experience than using ours.  Just flick on the Cruise Control and drive at the same speed as the HGVs  none of this changing lane and trying to get in a gap.  One of our pass the time thigs to do is count the number of times we actually overtake anything - surprisingly few and then usually on hills going up!  There are Aires where you can stop every 30 ks or so and vary from the large with pretty good catering facilities to just parking areas with maybe a wc.  Warning, if you are driving on a Sunday most of these will be full with HGVs who cannot drive on Sundays.  Also, the French just don't seem to understand the concept of caravan parking areas and frustratingly you may find one car using a large caravan (or HGV) space, way to solve this is plan your stops out of the main lunch break which in France is 1200 - 1400. The med area is not totally dead in Sep; you will find some things closed towards the end of the month but it is much quieter and the weather still pretty good at least it was last Sep.