[There is a familiar figure just sort of standing around. One Ai could identify in the dark if need be... well, considering that was how they met she certainly should be able to identify him that way. There is a vicious looking scar down his back that's obviously an old wound but he's shed his layers of clothing for the more appropriate swimwear.
Either way, Ai can't simply leave him be looking lost in the water park. So she hauls her intertube up and makes her way over to him. With one hand on holding the tube that is bigger than her, Ai pushes at his back gently - steering towards a set of stairs.]
This ride is much better than either of the other two you're looking at. If you haven't tried it with a tube then you haven't really tried it at all.