I'll ask it on the French catforum.
This is what they expect to have in Carnac and the week after that for their nationals:

Au vu des premières estimations, l’Eurocat le week-end du 1° Mai devrait
rassembler au bas mot entre 30 et 40 C 1.04. (translation: 30 to 40 in total)

( 20 à 25 Spit, 15 Esse, 2 ou 3 Evolution, et 2 ou 3 FX One)

I'll also ask if they'll have a seperate ranking at Carnac.

Gill