This has turned into an interesting and amusing topic.
What the poses are which only lovers would strike I shudder to think
I have visions of an imacculately dressed Peninsula waiter shooting porn movies in one of the guest rooms
I guess you have to be lucky if you score with a room sevice waiter, it has happened to me on a few occasions and has always been an unexpected surprise! Like that time in the Hyatt Singapore with a stunner from room service I didn't even think such things were dreamed of in Singapore let alone done! (my food went cold btw)
I really thought that the leading hotels were a bit more careful with their staff though. In regard to The Oriental it's a well known fact that people are not allowed in their lobby wearing shorts. There are even signs posted to that effect. I personally feel that it is daft as the Oriental lobby is a lot less grand and formal and perhaps more conducive to casual wear than perhaps the Regent, Sheraton Grande or even the Merchant Court.