Judging from the media pics alone, it looks like the unit has a “grate” on the back, that will certainly lend itself well as a means to directly allow heat to escape in addition to the heat sink that occurs via the metal body. Also, since the bottom of the unit has a gap between the body and the surface, that’s another means for allowing heat to escape. That said, as with all electronics, it’s probably best to avoid direct sunlight, though I’m sure the venue will gladly hook you with an umbrella. 
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