Have realised in Cass the importance of being French, where this is not possible, you will have difficulties.
Things have changed in France since my last visit 4 years ago. Then the French would attempt to communicate in English where you make the effort. Obviously now it seems due to our diplomatic naughtiness, this is no longer the case.
French must be spoken at all times.
Underlying French attitudes have shifted in a similar direction.
Cassis was not unfriendly as much as unpleasant, which didn’t really make it a worthwhile place to spend any time.