Luggage and bags:
Clothing/Shoes/Weather Gear: swim suits, flip flops, shorts, nice dress clothes for going out. But if you don't bring any of these items there are places that sell them very cheaply. I'm not kidding.
Toiletries and Medical Supplies: You might want to bring some toiletries
Luggage and bags: At sea weather can change very fast in the summer can get very cold if a storm blows in, lots of rain gear sun block and bathing suits.