I will mention that I studied their culture before going over. You have to understand another country's mindset and customs, as they will not be the same as your own. To think that it will be is hubris. If you approach things in the same way they expect their own people to do, you will find your path to be much smoother. If the French see that you are trying to adapt to their ways, you will find that they are very appreciative and forgiving. One way to do this is to use as much of their language, as possible. Even if all you know is bonjour and au revoir, use it. This is a small way to show your respect.

As the old saying goes, "When in Rome do as the Romans do."