Stressful situations, pain and excitement can all cause fainting. They cause feelings of strong emotion, distress or shock, which puts physical and mental strain on the body. So don't fuse out before you even get to go!
you will love it as they party most of the night, but don't fall asleep on the beach on the way back to your hotel as noone will wake you up and you will end up getting burnt.
I hope you have a fantastic time, it's so lovely to read about how excited you are, sometimes the world seems so jaded, your happiness has really cheered me up :o)