Floated it many, many times in my younger days. Top to bottom, Susquehanna River. Sea Eagle, Bon=air rafts used. Canoe, innertubes, and walked it.
2 day trips were fun. Problem is too much gear for 2 days. Myself and friend liked breakfast, lunch and dinner! Cold drinks, 2 poles each, tackle boxes, vests, coats and you name it.
Therefore, tent, sleeping bags left behind. Slept on ground. Fun!
One time, rained at night. What a mess, no fun. Try sleeping on the ground when it is raining. Not much sleep.
The fellows gave you wonderful ideas in posts for a life remembering experience. Take the advice and DO IT.
Changes in laws, might mean, life jackets and boat registration. You may consider looking into this.