I have that exact model Ameristep, purchased at a hardware store here in Lake Charles, LA. As you can see, very easy setup and takedown. I bring two cameras in mine: the Z9/800mm f/5.6 mounted on a tripod, and the D5/500mmPF for handheld shots out of the side windows. I’m 5’10”, 193 lbs and it’s snug, but not uncomfortable.
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Birds come within inches and I’ve actually had two land on top. Keeps the cold out pretty well, and mosquitos or other pests. If you’re in direct sunlight, tends to get pretty warm if you don’t open the side windows for ventilation. I’ve got plans to modify my windows with removable camo netting. Also inside, there is a cup holder on the chair handle, and a zippered bag on each side for storage. Comes with metal stakes if you need for wind situations.
They also make a slightly larger 2-seater, which is equally as easy, just larger.