Your credit card I think. My brother went to Bora Bora last year. He stayed in one of those huts that stand on posts in the shallows. He said that you can feed fish through a hole in the floor.
What he told me though was that the food and everything else is very expensive. It's a captive market there and all food, drink and other commodities have to be imported - mostly from France via Tahiti. He and his fiancee had to pay extra for breakfast each morning and it was 25 pounds each. Their evening meals in one of the handful of restaurants was about 100 pounds per night. They also went on a jeep excursion into the hills and a submarine ride to see the reef. Each of those was 350 pounds but my brother's girlfriend's firm was paying for the excursions.
I'm not sure what accommodation arrangements you have Pupluvr but take as much as you can. I think even little things like sun lotion, toothpaste etc are very dear as it is all imported from the other side of the world.