Whitewater is alot of fun. Tons of cool waterslides. The tornado is one awesome ride that you just have to see to believe.
Be on the lookout for coupons and special deals... admission is pricey.
Also, plan to take the day off and go during the week. The weekends are way too crowded and the wave pool becomes dangerous with too many people in it.
Also, plan to pack a cooler, leave it in your car and stamp out for lunch. Food inside the park is quite expensive and they have picnic table outside for people who brought their own lunch.