I've known several families that since KI has added D.A. they've made special trips to the park because the park now gave their kids an extra reason to go. You'd be surprised how many people actually visit D.A. while I don't have a specific figure, every time I've passed the area, I've seen numerous families, teens, adults entering the attraction and purchasing tickets.
Kings Island's Dinosaurs Alive was the first in the chain, it's the largest out of all of them and has recently added yet another scene (or two) as well as the largest animatronic dinosaur out there. Some scenes are similar to Cedar Points, but it's not an exact replica.