Just wanted to add that it might not drive up the number of people in the volcano pool too much--in our last two trips there, we only ever saw one or two people in the quiet pool at a time (well, besides us). Granted, this was during a slow time. As you can see by my countdown, I will be at the Poly in a few days--when I return I will try to remember to update you on what we see. Aloha!