So, what rules keep you profitably safe and sustainably beautiful? The first rule is: keep tourists all in one place for as long as you can during their visit to your island. Leaving aside the thorny issues of foreign ownership and oversaturation, Hawaii was not always a beach- it was a swamp before developers trucked in white a sand to create the fabled strand. The hotel on Waikiki all rose out of the same swamp and reclaimed lands. Which neatly encapsulate your second rule of safe tourism: do not displace any existing destination.