You will love Kool Runnings waterpark, I have been twice and it does have a lot of slides, a nice lazy river, and a smaller slide area for the not so bold, as well as a kids play area..for extra there is a go kart area too for an extra charge, not sure how much.

And I loved YS falls, am going for the second time when I get down there.

You say you stayed at Summerset in the past..what did you think of it and when did you stay last? I will be staying there this coming trip if all goes well.