Both our boats came with the carrying cases and seats folded up inside the boat.
We took the boats down to White Rock Lake in Dallas yesterday. We had attached the valves earlier, in the air conditioned comfort of the living room. Inflating the boats was easy, took just a few minutes; our only problem is that I had left the inflation guide ruler at home, so we had to guess on the proper pressure on the side chambers.
This lake is flatwater, no motorboats or jet skis allowed, and little wind meant the water was very calm and flat. In these conditions, at least, the boats felt safe and steady. Compared to a traditional hard shell kayak, they did yaw a bit more. I wonder if that is related to the side inflation, if the pressure didn't exactly match? And I may experiment with seat position, see if that helps to minimize the yaw. Still, a relatively minro issue.
The only other quibble is that the paddles are on the heavy side. Considering a good set of lighter paddles starts around $100, it was not a surprise. But new paddles will likely be our first upgrade.
I found the seat very comfortable, though someone with better paddling technique than me might find it's hard to keep forward enough.
Overall, I was generally pleased with how the boat felt and handled, and am happy with the purchase.