Question Planning a 13-Day Trip from Loire to the South of France

Happy New Year RS Travelers! We are scheduled to take this tour in September. Will someone who has done this trip share their itinerary highlights? I’m particularly interested in how to balance the time between the Loire Valley and the South of France. Any must-see stops or hidden gems along the way? Also, tips on accommodations and dining would be super helpful. Looking forward to hearing your experiences!