The temperature ranges from 25 degrees to upwards of 90 degrees so bring clothing you can layer.
Binoculars Spotting Scope with Tripod Pad to sit on while spotting Flashlight Sleeping Bag Camera (optional) Personal Items, i.e toothbrush, shaving kit, etc.
Any liquor of choice. Whiskies are scarce so if you have a favorite bring it with you. Customs allows you to bring 3 liters into the country. Beer, Soda and Water are supplied.
MAKE SURE YOUR GUN IS REGISTERED WITH U.S. CUSTOMS