Visas:
Most travellers will automatically be issued a four
week tourist visa upon arrival. This includes travellers from most Commonwealth countries,
most North, South and Central American countries, Western Europe, Israel and Japan. The
visa is issued free of charge and you won't have to pay for any subsequent extensions.
Health risks:
Dengue fever - no prophylactic is available for this mosquito-spread
disease. Avoid mosquito bites (especially during epidemics).