I have been told at both WKOVR and WPORV that Hawaii law requires that the kid's club take kids that are at least 5 years old. However, when I was at another resort in Kauai, they were able to take a 3 year old ot the kid's club. I think that this had something to do with licensing and certifications. I think that $50 is about right for a day although I think that I may have paid slightly more at WPORV. The kids really seem to enjoy the activities and playing with other kids for a day.