There are no shops at the island so take everything you need with respect to personal items, medicines, reading material, etc. The Resort does sell a few tourist items such as t-shirts and diving books.
It will probably be the case that you have already paid in full for your dive and accommodation package and flight prior to arriving at the island. Any expenses you occur on the island can be settled with a major credit card hence cash is not required.
Tipping is not generally expected in Malaysia.
