I would eat: food that is unique to the area–I’d attempt to find local hole-in-the-wall type fare vs. fancy food served where I was staying. I’d want to branch out to learn more about the culture & cuisine, and taste all the area has to offer.
I would want to see and do: upon arriving, I’d book a massage to relax before dinner. Saturday would be spent on an adventure dive & sail, where I’d scuba dive/snorkel and explore the Great Barrier Reef. Sunday would be spent exploring the Ngaro Sea Trail, which highlights the beauty and history of the area, followed up with time on the beach soaking in some rays.
I would buy: a few things unique to the beach/area, but would prefer spending my time outdoors taking in all the beautiful sights and sounds of this magnificent place vs shopping.