This is a review for ocean park waterworld, which is different from Ocean Park.
This is a largely indoor water park, with an outdoor pool and some outdoor slides.
Easy to get in, no queue. Max queue was 10 mins for slides, but mostly no queue at all. Staff efficient at keeping things moving. Good number of inflatables available for pool and lazy river. Bring own towel. It's quite pricey, but this is a quality park. Loads of showers and changing rooms. Food is basic stuff. If you like water parks, this will keep you happy.
They do weigh you here, but do it in a sensitive manner. Take note Andamandia in Phuket!