Is it still a requirement to fly low and fast into Amiens?
I’ve used French in France, a little Thai in Thailand, but my Chinese Licence did not permit me to use Chinese! I don’t speak Mandarin so it’s just as well.
English proficiency is a requirement in your licence if you are to use it internationally.
It can be confusing at St Hubert near Montreal as both languages are used at the same time, and there have been incidents. Of course if you understand French you still have to listen very carefully as Quebecois is not the same, but they still say it only once.