Posh Kauai Sarah: If you just want to see the light house the view from the lookout is amazing. If you want to see the wildlife and close up view its $5 per person admission but to me the view is best from the lookout.
stephiedoo: Wear sunscreen and bring lots of water for the sun that beaming down on you. Hiking shoes is a must since some parts of the trail get flooded from the stream/rain.