Thank you all for input. We've booked flying into and out of Hamilton so will need to ferry to Abel Point. We are departing from the yacht in Hamilton Island as we've decided to stay the last night on the island before flying out. Trouble is, it seems most places are three night minimum.
From what I can see only the main properties (reef hotel etc) have one night rates. Does anyone know of any Holiday homes/apartments which are happy to let out for one night? We are looking at September so I think it may pay to book now. It will be a Friday night.