Brent has a lot of good info in his book. A book I would recommend to a DYI.
But 500 gpd is if you run it 24 hrs straight. That's a good production for a boat. But for a resort? What are your power capabilities and costs in this remote
Island in Fiji
? I would say your requirements are going to be greater than 500gpd even for a very small resort. A boat water
maker and a land based water
maker can be two different things sounds more like you need a land based unit that will produce the needed amounts in a shorter period of time and one that won't cost an arm and a leg in electrical
use in the long run.