These parks are open late. Use this to your advantage. Not only are the ride lines shorter, but it cools off, the park has a whole lot different look at night and most people are lined up waiting for the light parade and fireworks.
If you do Kali River, do it last! No matter what a child says or wants.Do it last! You get drenched and it will make the rest of the day a bit uncomfortable.
Try the Big Bamboo at the Yak and Yeti. Lots of rum, but tastes like a juice box. Stay away from the chicken tikka masala there though.
Go see the Fantasmic show. It is pretty sweet for a light and musical deal. I hate that crap and it was pretty damn awesome.
Finally take a day to just walk and look. There is so much to see that you miss when commuting between rides and attractions.
A great trip that I have made twice now and am being hounded for a third in 3-5 years.