Would love to talk with other families who traveled around France with 4 young children!!

I have traveled (& lived) in France many times, but never with all 4 of my Littles. They will be 10, 7, 5, & 1 at the time! I was even an au pair for 3 very young children many years ago so I completely know how things will be different from the US, but I am certain there are other crazy parents who have done this with their families and would love to talk through some of your best tips and suggestions!!
We will be all around Provence, Annecy, Lyon, and Paris (going off from Paris quite bit too).
Merci!!