The minimum age is 3 if riding with an adult, but 10 years old if paddling their own boat on the short float.  This is because there are a few sections of moving water, nothing technical, but not safe for an infant or very small toddler riding in a lap. It is suggested that kids 3 or older ride in a tandem kayak. So, if the kid is too small to ride in a seat by themselves or won’t sit still without constant attention from an adult, they are too young. For the medium and long floats, persons under 18 must be accompanied by an adult.