Don't think you will need pants...hardly ever gets below 70...go casual, have multiple bathing suits and quick dry stuff, things don't dry very fast there because of the humidity...sunglasses, sunblock, OTC meds like Imodium, antihistamines, aspirin, etc. water shoes or sandals. Money with lots of small bills for tipping. Camera, and don't forget to pack your "chill" have fun!