Saint Tropez
1. Language : As far as the language is concerned, English is more and more common, this improved a lot during the last years. Even at small airports people will try to reply in English.
2. Off site landing : helisurface permit needed. Saint Tropez in particular steps up actions against passing quotas (legal/governement interest stepped up again in July, made local head news)
3. Heights: Watch out for minimum heights above aglomerations, and wildlife parks, fines can be hefty.
4. Lots of yachts you can land on...
Nice flying, d3