Perhaps its because I've set up more than a few screens in my lifetime - for rental and staging events, etc., but I liked the overall concept of the ProjectoScreen 120HD.
It's particularly nice that the whole thing, when not set up fits into a carry case that's just 40 inches long, and easy to carry. Unlike many fixed screens for the home or business, all four sides of the frame are folded and in one piece making the setup literally "a snap".
You can't argue with the size of the image: A 120" diagonal 16:9 screen is pretty big, definitely suitable for a family and friends outdoor event, or for that matter, a wedding presentation, or a business meeting. Not big enough, there's that 144" diagonal version for only $50 more, but it is larger in its carry case, and heavier.
For a quick setup and tear down, for a one night movie event, if you are setting up the screen over a lawn, the four stakes that go through the feet should be enough, if there's no significant breeze. However, if you there is, or you are setting up on a hard surface, such as a driveway, then use the nylon cord and use outboard stakes to keep the screen in place. You could even use all eight stakes with the nylon cord (you would need more cord), since you wouldn't be able to use the wholes in the feet.
I might suggest some hardware store clamps for the "other end" when using the nylon cord. It might simplify, such as clamping to a gutter, or a fence, or whatever else you have to anchor the screen to.
These fasteners showed signs of rusting after left out on a damp night. Wiping them down did the trick. Try preventative spray, if you have lots of moisture in the air as I do here.
My only concern about outdoor use, is that while the screen frame itself is a nice, lightweight aluminum, the fasteners on the hinges etc. seem to be steel. After two nights out, one of them rather humid (some light fog we call "marine layer" out here in So. California), the screen frame was wet in the morning, and you could see some liquid rust around those fasteners. I took this picture before that, but the arrows show where that rusting would appear.
All you really need to do is dry off the frame before shoving it back in its carry bag, and you should be fine. That said, the folks that sell the screen - at Visual Apex, said you could spray with Boeshield T-9, and Rust Free - one removes rust, the other prevents), or some other anti rust spray.