I'll be going to Manila. She is moving there in a month or so to pursue her career, and will be staying with her mother so I will get an opportunity to meet her family as well.
It is always nice to meet the family and see how they live but understand that one reason women do that is to shelter you to prevent you from meeting other women. I would suggest spending a week or so getting to know the lady without any family influences but that is just me.
There are lots of topics on the index page of this forum, read some and feel free to ask questions in the appropriate sections and we will all try to guide you with our knowledge. Learning as much as you can before the trip over will give you a leg up and hopefully prepare you for your adventure. The Philippines is not the US, it is a very different world with many poor people, so keep a low profile, do not wear jewelry or show a lot of cash and take taxis until you learn your way around and stay out of areas you are not familiar with. Another suggestion I have is to get some of those face masks if you will be in Manila proper, the air quality is terrible in the city.
There are many single women there, so prepare to feel like a chick magnet but at the same time want a person who wants you for you and not for your perceived wealth, as we all are very often looked upon as if we are very rich.