Offering the longest float on the river, Tube River Rage allows you to float from the entrance of the Great Smoky Mountain National Park back to their building. It is not a lazy river float as you will cross some pretty intense rapids. There are swimming holes with picnic tables, yard games and fire pits along the way as well. Rates for those 13 and older are $19.99 and for 12 and under are $16.99.