We love Rainbow River!
The water is so perfectly clear.
You can either tube from the campground or go kayaking. The only difficult part is that cars are not allowed down the hill to the water to take your kayaks, you have to hand truck or carry them. Which is HARD work unless you have your own hand trucks. Believe me.
We greatly enjoy tubing, but stay clear from the banks. Not only may you find unpleasantness, such as a dozing snake, but some of the bushes can be full of wasp nests. We found out the hard way.
My daughter suffered from about 6 wasp stings. Fortunately it was at the end of our tubing trip, which is about 2 hours. But it is a long walk back to the parking lot. It was a very rough day.
There are different tubing trips. The state park trip is 2 hours, which is just the right amount of time. By then, truly, you want out of the water. The trip from KP Hole (a county park) is 4 hours. I could not imagine tubing for that long.
No disposable containers or animals are allowed in the water. So no dogs, and all food and water must be in a reusable container of some kind. No cans or bottles or such. Also kids are required to wear life jackets. And YES, they do patrol.
The campground was completely remodeled a few years ago. That means many of the sites were completely cleared and have lots of sun. The brush has grown back since then. The bathrooms were also rebuilt. I have never ever seen the pool in working condition, though. However, there is a nice swimming area down at the river with lots of shade.