The Philippine immigration office is above the Red Needle Tattoo studio on the airport road. Getting an extension is a straightforward process taking less than an hour.
There is a photocopy shop across the street where you can get copies of your passport and the original entry stamp which are the only two requirements you will need.
Palawan has a fast growing tourist industry and things move smoothly here.
The office girl will get everything in order for the official stamp man who might arrive around 10am.
The fee for a 30 day extension is 1520 peso and the express service is an additional 500 peso.
The office will be closed for all public holidays.