France requires that your U.S. passport be valid for at least three months beyond your intended date of departure. However, the State Department recommends having at least six month’s validity remaining on your passport whenever you travel abroad. A tourist visa is not required for U.S. citizens planning to spend under 90 days in France. For more information on traveling to France from the U.S., please visit: https://travel.state.gov/content/passports/en/country/france.html https://travel.state.gov/content/passports/en/passports/apply.html
There are several beautiful towns within driving distance or accessible by train: Saint-Tropez, Cannes, Juan-les-Pins, Antibes, Saint-Paul de Vence, Nice, Eze, Villefranche, Monaco and more. And, here's a short video from the infamous Rick Steves that will walk you through many of the gems in the south of France: https://www.youtube.com/watch?v=er2tS8vWXHs
Moo-jhan (with a soft "j"). The "s" is silent.
Download the Duolingo app on your Android or iPhone. Or, go directly to the Duolingo website. It's free: https://www.duolingo.com/ Google Translate works well, too: https://translate.google.com/
Here are some tips: https://www.ricksteves.com/travel-tips/money/cash-tips
Check it out: https://www.ricksteves.com/travel-tips/money/tipping-in-europe
You will need an adapter to charge your phone, tablet and/or laptop. You can easily find one on Amazon. Here's a link to one: https://tinyurl.com/ya8sgzvo You may need a converter if you plan to bring a hair dryer, straightener, etc. Again, Amazon is a great spot for all of your electronic needs.