In reply to LP:
I know there is a fairly new VF just down the road from Ailefroide where the road goes through the tunnel but not been on it. I've seen kids on that one.
I took my wife on the Gorge Durance VF down the valley and she found it extremely physical so kids might struggle on that one (though I think there may be easier routes on it than the one we did!)It was certainly very spectacular with bridges crossing the gorge.
Le Grande Falaise VF was VERY long and again kids might struggle on it though again a spectacular route.
There is a family friendly one at the crags above Argentier le Besse which could be combined with some easy sports climbing.
We are heading back to Ailfroide in a couple of weeks - its a cracking area, hope you and the weans have fun!
Post edited at 15:07