this, and alot more. NO monitor you can buy on the consumer market is designed to operate outdoors. meaning, you will BARELY be able to see the image coming from the monitor if it's set up outside on a sunny day (even under a tent) the image will all be washed out by the intense ambient light and whoever playing the game in that environment would NOT enjoy it.
you can try this yourself and just get a laptop and try to use it in an outdoor environment, you will have to strain your eyes simply to see what's on the screen, forget about trying to play any kind of flight sim on it. the only way this would work is if you build a "dark room" to bring ambient light down to indoor levels, or i'm afraid you'll be wasting your time.