Sounding like Island Living is a Vacation Pack?
The description doesn't specifically state this is a vacation pack or and actual world where you can live and build a home.
Forum Discussion
It is a vacation GP masquerading as an EP. Once you have swam with a dolphin, snorkled a bit, cleaned up a beach and flailed around the water as a mermaid you'll be done with your vacation. Think of it as a week vacation away from your regular game saves.
