I can say (from experience) that the CAAP license validation and conversion process is both lengthy and tedious
A visit to the CAAP office located near NAIA in Manila is necessary to obtain the application form and checklist of requirements
Completing the checklist will require visits to multiple government agencies to obtain documents such as NBI clearance, Radiotelephone license, etc
Depending on your experience and license (ATP, Commercial) one or more academic tests will be required - Philippine Air Law at a minimum, possibly more
I have heard that 'onboarding' Cebu Pacific contract pilots (having an ATPL) take several weeks to complete this process
This mirrors my own experience as a permanent resident completing the checklist on my own time
If you are visiting the Manila area for an extended vacation with the wife, you may wish to pursue this
Otherwise, I suggest you focus your professional activities in the USA where the opportunities are much more plentiful right now