Nice pool bar would be nice for sure. Profitability?
I always thought a dry cleaners would do well, seeing the island has many higher end resorts and homes/condos now. Enough demand to make a profit?
The photo/souveneir set-up may work. Take you and your friends picture on the beach/rest/club and sell it to you in a key chain or picture frame. I always buy those things!
Donut/bagel/coffee shop. No $8 cups of coffee please.
Subway kinda' business (not the underground kind KLC).
Horseback riding up on the North end of the island. Can't wait to here the comments on this one.
Just some ideas, I know, not all good ones,
SIN