Thailand is a fantastic destination for families with its vibrant culture, beautiful beaches, and delicious cuisine. Here's a fun-filled 7-day itinerary for you and your family:

Day 1: Bangkok

• Morning: Visit the Grand Palace and Wat Phra Kaew
• Afternoon: Explore the bustling markets of Chatuchak Weekend Market
• Evening: Enjoy a traditional Thai dinner and watch a cultural show at Siam Niramit

Day 2: Bangkok

• Morning: Take a boat ride along the Chao Phraya River to visit Wat Arun
• Afternoon: Visit the interactive Art in Paradise Museum for some fun family photos
• Evening: Explore Asiatique the Riverfront for shopping and dining

Day 3: Chiang Mai

• Morning: Fly to Chiang Mai and visit the Elephant Nature Park for a day of elephant conservation activities
• Afternoon: Explore the Old City and visit the temples of Wat Chedi Luang and Wat Phra Singh
• Evening: Enjoy a traditional Khantoke dinner with cultural performances

Day 4: Chiang Mai

• Morning: Visit the Doi Suthep Temple and enjoy panoramic views of the city
• Afternoon: Take a cooking class to learn how to make delicious Thai dishes
• Evening: Explore the Chiang Mai Night Bazaar for shopping and street food

Day 5: Phuket

• Morning: Fly to Phuket and relax on the beautiful beaches of Patong or Karon
• Afternoon: Visit the Phuket Elephant Sanctuary for a more ethical elephant experience
• Evening: Enjoy a seafood dinner at Rawai Beach

Day 6: Phuket

• Morning: Take a boat trip to Phi Phi Islands for snorkeling and beach hopping
• Afternoon: Visit the Big Buddha and enjoy the stunning views from the hilltop
• Evening: Watch the Phuket FantaSea show for a magical cultural experience

Day 7: Phuket

• Morning: Relax on the beach or take a family-friendly island-hopping tour
• Afternoon: Visit the Phuket Aquarium or Splash Jungle Water Park for some family fun
• Evening: Enjoy a farewell dinner at a beachfront restaurant

I hope this itinerary gives you a good mix of cultural experiences, outdoor adventures, and relaxation time for your family vacation in Thailand! Let me know if you need any more recommendations or assistance.