You only have to worry about diving in France and the French parts of Canada with a PADI cert.
But that's another thread.
Well that's sort of a broad statement, and those two probably shouldn't be lumped together. France, the agency is the issue (with maybe a couple of other requirements); the "French parts of Canada", namely Quebec, it's not the agency that's the problem, it's the need for a permit as well as a c-card... but you're right, that's another thread entirely.
To the OP, have fun and enjoy your trip.