Editor’s Note: This CNN Travel series is, or was, sponsored by the country it highlights. CNN retains full editorial control over subject matter, reporting and frequency of the articles and videos within the sponsorship, in compliance with our policy . CNN  —  Every year in Thailand, on the evening of the full moon of the 12th month of the Thai lunar calendar – usually in November – thousands of locals and tourists head for the nearest body of water to celebrate Loy Krathong. As part of the