I wouldn't go to Paris for Blackjack
There is only one official Casino in Paris (Enghien-les-Bains). The only time I was there about 5 years ago, the BJ-tables were hopelessly overcrowded in spite of the rather lousy rules (ENHC,D9,DAS,NRS).
I would say the only way to make money there is to wong in at the big tables, which are less crowded.
However,I must warn you:Enghien belongs to the Barri�re Group which pursues an active policy of barring advantage players.I'm actually one of their victims!
But sure there are still a lot of good reasons to visit Paris!
Francis Salmon