It's rake for small stakes, hourly for high stakes.
The fee is an annual fee (between 20 to 100 euros depending of the 'cercle' for the calendar year).
I know that the 'cercle Cadet' and 'Cercle Clichy' are offerring the fee since it's the end of the year. The dress code in those two cercles are less strict than ACF.
ACF rake ( 50=NL200 , 100=NL400, 250=NL1000) :
Cadet rake (not sure if that evolved since I played there) :
"All pots without flop or not reaching € 14 are not taxed. More than 14 €, dealers collect € 2, and 2% for every € 100 in the pot. The rake is limited to € 24, regardless of the final size of the pot."
Enjoy your trip in Paris