It's very sad when your favourite camping is no more and I'll bet it isn't used at all next year. In fact La Mussee was very quiet this year with few campers on the route up from the entrance. Rumour is that there may be a new Welcome Centre on part.
No problem with getting the cars up to our campiong spot as there is a route around the top i.e. no need to go down the dip, although surprisingly it's not that steep. The 7's make it OK, and the F40 was a doddle (suspension can be raised from inside the cab). Now the GT40, that's another story.
I think if you can get the car on the ferry, then generally there are no problems.
Ah well, must get back to sorting out an alternative camp.