When traveling to the Philippines, you need to have this ready to present to the counter when you check in for your flight. It's free and very easy, you can just download the QR code onto your phone and show it to them. Regitration is 1 week before travel!
When you arrive at the airport, buy a GLOBE sim card with credit so you can easily make calls and sms while in Manila. A sim card should typically cost 60 PHP, just fill it up with credit and ask the nice ladies at the counter for unlimited call and text (and probably some internet) This should typically cost 1500 PHP
Grab is a car app that will get you to places much quicker (and much safer) think UBER! Download the app to your phone and input your credit card details so you don't need to keep paying with cash.
The Philippines is a bit behind on the times and a lot of places still require cash payments. It would be practical to withdraw some cash right at the airport when you arrive 😊