MasterCard and Visa are the most widely accepted credit cards in the Philippines. That being said, it's always a good idea to have cash on you as many market stalls and less touristy areas are less likely to accept credit cards.
The standard voltage in the Philippines is 220V. There are three plug types in the Philippines: Types A, B and C.
It's recommended to have gotten the following vaccinations before visiting the Philippines: Measles, Polio, measles-mumps-rubella, diphtheria-tetanus-pertussis, Chickenpox, and your yearly flu shot. Additional vaccinations you should get are Hepatitis A, Typhoid, Cholera, Hepatitis B, Japenese Encephalitis, Malaria, Rabies and Yellow Fever. We recommend double checking with the CDC or your doctor for more information about vaccinations you need before your trip.
These are the holidays celebrated in Philippines: