Not fished the lake mate but I will offer a bit of advice on the check list,I`m sure others will add more
First thing I will say is "fish like you do in the UK",no need to do anything different,if you can catch Carp here you can catch carp in Francais......
Second thing I will say is,"don`t assume French carp are mugs,"lol,In my experience they can be moody,very moody
Anyway back to the check list,
Batterys,trust me they cost a fortune in France.
Hooks,wide gape and strong,they have big gobs....
Take plenty of leads,just incase,as tackle is often hard to come by,and normally pretty basic unless your near a big town.
Good Luck