Glad to know that brothers find information helpful, just return from South Asia trip including Sri Lanka, will post some pictures in a day or 2, need some time to sort out first.
I have the same feeling at the Red Night districts in Amsterdam and Hamburg. Cameraing is absolutely offended. No one dare to risk.
Those booths are furnished exactly like a small room rented on weekly basis by the girls. Customers can come in from the front (Show Window side) but there is another exit corridor at the back.
Brave job, thanks!