In this NorthWest Food Fair YouTube video we have even toned down the brightness about 80% to be inside. It works very well for entertainment. We can provide a bright, easy to read screen even on the sunniest days for outside or a more modest screen for inside. This was screen was powered with electricity from the building, thus providing a clean working environment for those inside.
The traditional projection screen used at the Oregon Convention Center basically failed as it was not bright enough even for close up viewing, The LED-Trailer was able to present a clear and easy to view, live cooking show, across the whole large convention floor, photo below.