Honeymoon Itinerary for Thailand, Cambodia, and Vietnam

• Day 1: Bangkok, Thailand
  Begin your honeymoon in Bangkok, the vibrant capital of Thailand. Visit the Grand Palace, Wat Pho, and take a boat tour along the Chao Phraya River. Enjoy some delicious Thai food, and immerse yourself in Bangkok's exciting nightlife.
• Day 2-4: Siem Reap, Cambodia
  Fly to Siem Reap, Cambodia, and spend the next three days exploring the ancient temples of Angkor Wat and Angkor Thom. These historic sites are architectural masterpieces, and are a must-visit for any traveler. Take a cooking class to learn how to make traditional Cambodian cuisine and enjoy a romantic sunset at Phnom Bakheng.
• Day 5-7: Ho Chi Minh City, Vietnam
  Fly to Ho Chi Minh City, Vietnam, and spend the next three days exploring the bustling streets of this vibrant city. Visit the Cu Chi Tunnels and Reunification Palace, and take a street food tour for a taste of delicious Vietnamese cuisine. End your days with a relaxing spa treatment and rooftop drinks.
• Day 8-10: Hoi An, Vietnam
  Take a short flight to Hoi An, Vietnam, and spend the next few days exploring this charming city. Take a bike ride around the countryside and visit the ancient temples and architecture of Hoi An. Spend some time on the beach, and indulge in some shopping for custom-made clothes.
• Day 11-13: Halong Bay, Vietnam
  Take a scenic Halong Bay cruise and enjoy the stunning karst limestone formations and clear blue waters. Spend your days kayaking and swimming, and your nights stargazing on the deck. This will be a breathtaking experience that you'll never forget.
• Day 14-15: Hanoi, Vietnam
  Fly to the charming French-colonial city of Hanoi, Vietnam, and spend your last two days on a street food tour. Visit the Old Quarter, and take a walking tour to see the city's historic sites. End your honeymoon with a romantic water puppet performance and some final shopping.

Time and Cost Estimates

• Grand Palace Bangkok (2-3 hours, 7 USD)
• Angkor Wat (1-2 days, 37 USD)
• Cu Chi Tunnels (4-5 hours, 20 USD)
• Halong Bay Cruise (2-3 days, 200 USD)
• Water Puppet Show (1 hour, 10 USD)
Total Estimated Costs: 274 USD per person

Transportation

During your trip, you will need to consider flights, buses, taxis, and boats between locations. The total travel time will be approximately 35 hours, and the total cost will be roughly 500 USD per person.

Useful Tips

If you have more time, consider visiting the beaches of Phuket, Thailand or the Mekong Delta in Vietnam. If you have less time, consider skipping Hanoi and spending more time in Bangkok or Ho Chi Minh City. Remember to pack light and bring comfortable clothing for hot and humid weather. Don't forget to bring a reusable water bottle to stay hydrated and reduce plastic waste.