Although France likes to think of itself as a modern nation, air conditioning is little used and it is next to impossible to get decent Mexican food. One continuing exasperation for American visitors is that the people willfully persist in speaking French, though many will speak English if shouted at. As in any foreign country, watch your change at all times. The People France has a population of 54 million people, most of whom drink and smoke a great deal, drive like lunatics, are dangerously oversexed, and have no concept of standing patiently in line. Most French citizens are Roman Catholic, though you would hardly guess it from their behavior.
Many people are communists, and topless sunbathing is common.
Men sometimes have girls' names like Marie, and they kiss each other when they hand out medals. American travelers are advised to travel in groups and to wear baseball caps and colorful trousers for easier mutual recognition. If you are from the mid-west and of 'normal' weight for that region, you will not be able to buy clothing in France. Bring with you all you may conceivably need. You will also be required to purchase two tickets for any train or aircraft trip.