What cultural faux pas should I try to avoid making in Maisons-Laffitte?

"It is important to be mindful of local customs when traveling. In Maisons-Laffitte, it is generally considered impolite to point with your index finger when speaking, cross your arms in front of someone when talking to them, start eating before the host does, or to wear very revealing clothing. Additionally, in France it is customary to greet someone with a kiss on both cheeks," remarked another expat who made the move to Maisons-Laffitte, France, France.