We did the Rhino Safari years ago when our kids were in junior & high school, so we went 2 to a boat. The older one could be the driver but the younger had to just ride. Lots of fun. Still remember when we stopped in Maho Bay to snorkel and one of the planes landed just over us. I hadn't noticed it coming in so was completely taken by surprise when it roared down just over our heads (or so it felt at the time).