Hello, AReality ! welcome to Luang Prabang 2 Day weblog.
I'm not sure the information about that festival in the other web, but you can use this keyword for search "Lai Heau Fai festival and Ok phansa festival" and you can ask me and other members as well.
Have you got nice photos in that night ? if you don't mind, please you share the photos for us.
Red or yellow LED Flashlights are used in indicator and alphanumeric displays in environments where night vision must be retained: aircraft ****pits, submarine and ship bridges, astronomy observatories, and in the field, e.g. night time animal watching and military field use.