My kids were probably 3 or 4 the first time they went.
My daughter is 14 now and would probably love to go, but she's a 14 year old girl.....so communication with me is usually a few cross eyed grunts.
My son can't get enough of it though. He LOVES to be out White Perch fishing on the Magothy, or to be pond hopping for bass on the shore.