bathing suit, sunglasses are a must, sandals, t-shirts, tanks, pack for hot weather all year round and if going during december, january, pack a light long sleeve shirt you can put on at night for if it gets cool. But generally be ready for heat 99% of the time.
Toiletries and Medical Supplies: Never ever forget sunscreen. I had a hard time finding some because the locals dont use it. Bring insect repellant and something you can put on the insect bites, like vicks vapor rub which works well to stop the itching,
Photo Equipment: Be prepared to take loads of pictures because the place is beautiful.
Luggage and bags:
Essentials of course. Leave room for souvenirs.
Clothing/Shoes/Weather Gear: Walking alot? Don't suggest sandals or flip-flops. I'd rather take comfortable walking shoes... it rains sporadically throughout the day so keep a small umbrella handy. Save the sandals for the beach!
Toiletries and Medical Supplies: Take some Wet Ones.
OFF bug repellant!
Keep a First Aid kit handy.
Photo Equipment: Definitely stack up on cameras.
Camping/Beach/Outdoor Gear: Swim suit; flip-flops; beach stuff!
Miscellaneous: ***For those Contact wearers:
********DON'T FORGET YOUR CONTACT CASE!!!
**like I did!! I had to be resourceful and use to waterbottles to stick my contacts in.