Acting as a Japan Travel Expert, design a 14-day itinerary focused on traditional Japanese culture. Recommend visiting Kyoto for temples and tea ceremonies, Hiroshima for historical exploration, and Tokyo for modern cultural experiences. Include tips on language, local etiquette, and attending seasonal festivals such as cherry blossom viewing or Gion Matsuri. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>