ive come here for a few years for Village Music Circle's annual Drum Circle Facilitation Training (23 years now).
The staff are super friendly and food is good.
They have a ropes course and it is across the street from a skydiving place.
This campground is set up for anything from large groups (50+) to small families. There are cabins to rent out or places to pitch a tent. The water is pretty mellow (at least during the summer) and is great for stand up paddling. This is on the Northwestern tip of Oahu and is a must see. Across the street there is also a skydiving company, so throughout the day you will often times see parachuters appearing in the sky.