Indeed, except for the tourist industry, France virtually shuts down in August. Commercial agreements are short because they refer to the legal code. Many business people have studied law and can draw up their own contracts. Parties to an international contract may choose which country's laws will govern it. Eye contact among the French is frequent and intense, so much so that North Americans may be intimidated.
Hierarchies are strict.
Try to cultivate high-level personal contacts. Business Entertaining Business can be conducted during any meal, but lunch is best. Whoever initiates the meal or drink is expected to pay. When eating, keep both hands on the table at all times. When finished, place your fork and knife parallel across your plate.