The sun is strong. Put on reef safe sunscreen before you head out and reapply through the day. Wear a hat and light clothing, and drink water often to avoid heat exhaustion. If you feel dizzy or nauseous, get into the shade, sip water, and rest.
Swim at beaches with lifeguards and obey the flag system. Ask locals or lifeguards about currents, drop offs, and rocks before you swim, snorkel, or jump from cliffs. Enter the water feet first if you are unsure of depth. Watch for sea urchins and jellyfish. Do not swim after drinking alcohol.
Mosquitoes are present in some areas. Pack repellent with DEET or picaridin and use it in the late afternoon and evening. Light long sleeves and pants help at dusk. Sleep with screens closed or use a mosquito net if one is provided. Keep up to date with routine vaccines and talk with your doctor about Hepatitis A and Typhoid for food and water safety.
Choose places that handle food well and serve it hot. Peel fruit yourself. Bottled water is widely available. If your stomach is upset, switch to simple foods and oral rehydration salts. Seek care if you have high fever, blood in stool, or symptoms that last more than a couple days.
Use licensed guides and operators for rafting, zip lines, scuba, and ATV tours. Check that safety gear fits and is in good condition. For rivers and waterfalls, wear sturdy water shoes, avoid slippery edges, and keep phones and cameras in a dry pouch. Do not cliff jump unless the spot is known to be safe and you have checked depth and currents that day.
Roads can be narrow and winding. If you rent a car, drive defensively and avoid night driving outside well lit areas. Always wear seat belts and use child seats. Only use licensed taxis or rides arranged by your hotel or a known driver.
Keep valuables out of sight. Use your hotel safe and take only what you need on day trips. Separate small amounts of cash for daily use. Be discreet at ATMs, shield the keypad, and avoid withdrawing cash late at night. Keep phones and cameras secured when not in use.
Recreational drugs can lead to legal trouble and impairment increases risks near water and roads. Do not leave drinks unattended. Respect private property and follow posted signs. If a situation feels off, leave and get help from staff or security.
Buy travel insurance that covers medical care and the activities you plan to do, including water sports and vehicle rentals. Save digital and paper copies of your policy, prescription list, and ID. Bring any personal medications in original containers and enough for your full stay plus a buffer.
Before you head out, save your hotel or villa address, the front desk or host number, your tour operator number, and local emergency numbers provided by your accommodation. Share your plans with a companion or your host. In an emergency, give your exact location and landmarks, then follow the instructions from responders or hotel staff.