Are you going there in late feb 2018? I am going then ;)
You do get quite a lot of people escaping the northern hemisphere winter in February from various countries.
Visitor arrivals for 2017 for the whole of the Philippines.
1. Korea 2. USA 3. China 4. Japan 5. Taiwan 6. Australia 7. Canada
19. Guam 20. Netherlands
Not sure how this is even a travel related question? Some kind of survey?
Don't forget the Philippine tourists as i am sure they are the biggest contingent visiting Palawan, but they tend to be short visits, booked through an agency and mainly for the underground river.