You could add a remotely operated clock to the room. Every time they close their eyes or bend over, you add some time until the night is “over” even though they’ve only been sitting there for an hour or two. I don’t know how you’d have to time it to make it feel realistic for them, but this could add another mental dimension to this scene.

Also, the latex is absolutely beautiful in this one <3

Need to anchor that jacket to the ceiling to make sure they don’t fall off.