Official Papers

Valid passport
Airline tickets
Luggage
Duffel bag or rolling luggage
Daypack to carry camera, water bottle etc.
Luggage locks and tags

Outerwear

Mid-weight polar fleece sweater
Rain jacket and rain pants or poncho
Clothing
Two pairs of hiking shorts
Three T-shirts
One long-sleeve shirt
Hiking pants, loose and easy to move in
Regular underwear
Four pairs of hiking socks
Liner socks, if needed to avoid blisters
Swimsuit

Clothing Accessories

Bandanna
Swimsuit cover-up
Sun hat, broad brim
City Clothing
Lightweight, easily washable items for city wear

Footwear

Lightweight and supportive hiking boots, broken-in with good ankle support
Beach sandals
Casual, comfortable shoes for evening

Accessories

Sunscreen and lip protection, SPF 15+
Sunglasses and retainer strap
Two water bottles
Toiletry kit (soap, toothbrush, etc.)
Beach towel

Optional Accessories

Security pouch or money belt
Trekking poles or walking staff
Camera and film
Reading and writing materials
Watch with alarm or travel alarm
Travel pillow
Motion sickness remedies
Personal first-aid kit
Insect repellent (low risk)
Electrical adapter plug/converter