The past 3 trips, I've just taken a carry-on. Take a few swimsuits and sundresses, some shorts and t-shirts, snorkle mask, flip-flops, nice pair of sandals, and a few books. Since I stepped on a sea urchin one time, I have since never forgetten my tweezers. Of course, sunscreen cannot be taken in the carry on, so I always buy that when I get there, and use a ton of it, #30 or higher.