It takes place mostly in Lanta Old Town for 3 days and 3 nights during the full moon on the 6th and 11th months of the lunar calendar. Food tasting, dancing and music, and tourists can join the boatride around the island.
...the SQUATTER. You will see these in many places as you travel in Thailand. For some reason my brother decided to take a picture of this one before we left Koh Lanta.
After you get used to them they are not as bad as you would think, at first glance.
This is just an FYI tip.
Ko Lanta has quite a few Muslims here. Muslims do not drink so when eating at a lot of the restaurants, you cannot order a beer etc. You can only get alcohol from the bars, and the bars don't usually open until later on.