Honestly, I have SUCH a blast every time I come
here. It's cheap, $17 per tube which includes the bus ride to and from. Lasts anywhere from 3 to 6 hours depending on river flow and which float option you choose.
This definitely isn't for kids though. It's party central for adults though! I will be spending tons of time here every summer. Remember to drink lots of water and bring sun screen! There aren't any stops or buildings along the route so you've gotta stock up before you come. They sell tubes for coolers, so bring your water, sunscreen, beer, and some snacks - you'll be set!