It should be fairly warm in the CAribbean, so bring your shorts a few bathing suites, but also a sweater for nights if its chilly outside. Sometime too, the dining rooms can be chilly so a sweater or wrap comes in handy. Be sure to pack sun-screen, the sun will be warm too.
Dianne, pack warm weather, tropical clothing, cottons, linens, and silks, lightweight fabrics, pack a light sweater or wrap to throw over your shoulders at night. Pack shorts, t-shirts, bathing suit/cover-up, sneakers, water sandals, sunscreen, sunglasses, hat ,fanny pack.