RTBDiver, maybe my post was badly worded or a bit misleading as to what I was asking. The dive gear is all getting packed, clothes (bathing suits, shorts, t-shirts, etc) are getting packed. My electronic gadgets (laptop, e-reader, etc) are coming along. Chloroquine and enough bug spray so that I don't have to make a mad dash to the store as soon as I get there are getting packed. I'm also going to have money because I'm well aware that I can't legally get paid while I'm there.
Based on travels to other Caribbean islands, I know that availability and price of some items can differ dramatically from what I'm used to seeing at home. Basically, what I was trying to find out is are there certain things I should plan to bring spares (or more than a travel 3oz bottle) because of limited availability or high price on the island. For example, if a bottle of shampoo were going to cost me $8 on the island, if I had room in my suitcase, I'd bring a $3 bottle from home.