Also what will the high value tourists eat, they will be paying some very high prices for an exclusive holiday and will expect decent quality fresh food -readily available from S Africa but has to be shipped quickly.
Some years ago we spent Christmas on Nieue. Served by one flight a week (nearly four hours) from Auckland. Out and back was pretty much the limit of even an ER 737. We were surprised that the food at the only hotel consisted of canned product in the main. Even the fruit salad at breakfast was pineapple chunks, etc straight out of a can. A ship called approximately every two months.
A superb place, but not an island of your South Sea dreams. 95% of the pax were islanders going home with mountains of fresh food.