Need to plan you full moon Party , we have the dates at
Full moon parties are so over rated. Sorry. Don't go there expecting alot. After 2 days the loud music 24/7 just got on your nerves. Shame really coz the beach is alright. Just be careful of the syringes left there the morning after. And no matter how many drugs you take...you will not be able to swim to Ko Samui. You'll just be washed up the next day.
They say the parties are for when full moon occurs (c.28 days) but in actual fact they go on every night. Same sh!t again and again.
HOWEVER...it's something that has to be done at least once in your life...but so is everything that Creative above just advised.
Call me boring but I did a short Thai cooking course, elephant riding, 4 night trekking, bamboo rafting, etc and i loved it (and that was just in North Thailand).
You just go to full moon party at Hardrin but You shouldn't stay at hadrin beach , try to stay at hadyow beach ,it's more chill and easy to get everything ! anyway they hav the half moon party , I't 's more awesome than full moon , don't miss lah .