We just got an A122S as well. We love it. And now we know what those felt pads are for on the ceiling!
The screen room was a real challenge the first couple of times. In their set up video, there has to be a lot scenes they deleted. How does she get inside so easily with the wall down? When I did it, the neighbors reported a bear fighting a tarp.
But seriously, once I got the hang of it, it got much easier. I lay the poles out where they will be placed; I know just where the corners need to be so that when you flip the wall up, the pole sockets will be correctly positioned. We travel with a small 2-step fold-up ladder so that makes it easier to get the doors zipped in place. (The ladder is a handy shelf for the rest of the trip.)
I also put some gaffer's tape on the lower-left corner of the upper half of the door. It's a little sharp there and I managed to tear a one-inch hole in the fabric.
The tent stakes are a little wimpy, but they work fine unless you are in a sandy location.
We like the mosquito net skirting. It seems to attach just fine and works well. We did replace some of the Velcro. I can't recall how much of the 2" Velcro comes with it, but we put two strips where the sidewalls meet the camper walls. It doesn't look out of place at all.
Overall, I think it's a great screen room and if you take the time to learn how to put it up it provides a great entry room. We store a lot of stuff under it we don't want wet. My wife has made it into a bit of mud room, letting us take our shoes off before we go inside.
It has slowed us down once in a while when we get up and it's wet from rain/dew, but that just means another cup of coffee while it dries out. One time, I detached it because it was too wet, usually we brush it off and flip it inside when we fold it down. (I still don't look as cool as the model in the video when she folds it down, but I am working on it.)