I visited both Bahamas (Atlantis) and Hawaii (Kauai, Big Islands). For me, between the two, I would pick Kauai in terms of livability and for things to do and overall quality of the place. The only sucky thing about HI is the timezone, it is a couple of hours ahead of PST which is already bad as it is for me.
. So a good food business would probably do well. I know someone who is presently setting up a Sushi Bar, but he's going really high-end in the tourist area.