That looks like individual sitting areas, some with awnings for shade. If so, not very inviting. Away from the water, no views, boring rectangles. I thought maybe an out-door auditorium - but no stage.
Man - if this was one of their outdoor orgy places - that would be REALLY boring.
“Okay - you’re in A1 - first cell on the left.”
Unless it is the staging area for the little girls. Get dumped off by boat on the beach. “Okay - follow the nice man up to the waiting area. It will just be a short time and he will take you inside the building where the movie is showing and some cold drinks and free food.”
Air ducts? Rainwwater harvesting system?