The price is 1300 PHP for the whole boat ? Yes, 1300 PHP for the whole boat, max of 20 passengers. Note however, that you will have to pay for the transportation going to the port and back to the city (we paid 500 roundtrip for a tricycle). You also have to pay for the entrance fees for the 3 islands, environmental fee and pay for your own lunch. Is it possible to start the private tour at 9-10 AM ? Yes, it is possible. You just have to go there early to avoid the long queue. I would like to reiterate, that you should ASK and KEEP the Environmental fee receipt (150 PHP) because you can use it for the Underground River tour and vice versa. Overall, I can say that this is way cheaper and less hassle than joining in tours. You'll have a private boat (no waiting for other passengers) and can bring your own food. Enjoy!

Some hotels have a package including transpo service from Puerto Princessa to El Nido v.v. If your hotel doesn’t offer, try booking in KLOOK. hassle free they can fetchu from the airport to your hotel v.v

DIY is a hassle in a place like Puerto. Tours give you many additional services so in my opinion Tour package is more better option. By DIY you'll not be able so save much, max 300 PHP maybe. If you want to try DIY, reach to the port by tricycle and you'll see agents approaching you for rides.

Snorkels costs Php 150, but I recommend you check the snorkels coz I took one that is cracked and waters seeps in so I didn't really enjoy the snorkeling that much.

Hello am sorry as I have no idea about Centro Hotel as we stayed in a different hotel. I guess it is better if you call the hotel directly and ask. Enjoy your visit in Puerto Princesa. :-)