Correct. Always a therma rest sleeping pad and a tarp for shade if it's hot or to have shelter outside the tent if it rains. Tent is a 4 man Eureka Timberline. Perfect for one or two people. One thing I really like on a float trip is a roll up full height table - makes food prep and a place to sit down and eat without a paper plate in your lap really nice. Two burner Coleman stove and Coleman lantern always go too. On a longer trip with multi boats there's usually a small chain saw too. I like to rough it easy. Some good scotch and a good book complete the deal.
I've got a grandson who likes the rivers too. Instead of buying him a computer for his HS graduation present, I bought him a Wenonah Prospector 15. Something he's going to be able to use for the rest of his life and will never need a software upgrade. He can be handy to take along.