Having been to Phi Phi a few times, I'd say it's enough.

You'll either love it or not. I never thought to much of Phi Phi. Never liked what they did to it. But, it is super lovely.

My advice. While on the boat, make sure you check the location of the life jackets and exits if sitting indoors. Thai boats are notorious for overloading passengers and cargo & improper operating permits (or ones provided with false info). Better safe than sorry.

Enjoy, & don't forget a hat. Sun is out eery day lately.