a good pair of walking sneakers are a must.
Pack a pair of water sandals or flip-flops- as the decks get hot and if you are going to any beach- the sand can get hot.
1 pair of black dress shoes, or strappy sandals for women
1 pair of casual shoes- boat type shoes for men, flat sandals for women
light sweater/jacket or sweatshirt for possible cool days and nights
If your dress is strapless, halter or sleeveless style a wrap or a nice lacy sweater is a good idea as the dining rooms can be chilly.
Daywear is usually short & t-shirt or tank tops, depending upon the weather