Really, what the worst that can happen? It's not like any babies who don't know how to swim, can barely walk, and don't grasp the concept of what a lake really is where on board.
Besides, three person tubes are pretty stable.
The worst that could happen to anyone was a little sunburn, and that was mostly just me and my legs that haven't seen the light of day in a few years. I just have to figure out how to get one of those boats for myself. Relaxing is an excellent description of the two days we spend on the water. Thanks to Joe for taking all of us out.