The entrance fee depends if it's for day or night swimming. The entrance fee for day swimming is P250 for adults, P200 for children under 4 ft. and senior citizens. Entrance fee for night swimming is P180 for adults, P120 for children under 4 ft. and senior citizens. I suggest you call Amana Waterpark to verify if there's any change in the rates. See the contact details, location and other rates at Reviews.VisitPinas.