You can access KI by Rex or Sharp Airlines. Car hire is available from airport. This propety is for the intrepid explorer and suits lightweight hiking style tent campers. There is a barge from Melbourne > Island > Tasmania, but I haven't personally done this so can't advise. Supplies can be bought from Currie about 10 minute drive (IGA, Foodland, etc)
Guests must be completely self-sufficient and leave no trace.