What do you wish you'd known/ done first?

[Fizzy13]

I have just accepted a job in Toulouse and we'll be heading out in August . I will be working, DH will be Daddy for a bit while we get our 3yr old settled in maternelle.
May I use the collective MN experience to smooth our journey?!
Those of you who have made a move abroad what were your big (or small) lessons?
What will I have forgotten about?!
Any advice on adapting to a different culture? (I've lived in the US but that wasn't a major culture change, although I still felt it)
Thanks for any pearls of wisdom!

We didn't need to get certificates translated until we applied for citizenship.

Ecole privée are definitely worth looking into. My 3dds have all gone through privee.

There are obviously differences across the country though, no one here ever goes to the park after school and certainly not with beers.