What you do, and who you do, is your own business even in a slip port.
Besides how could they prove it?
It's the room service guy's word against theirs.
Denial is a wonderful thing!!!
Maybe the shagging isn't what the problem was- maybe they were intoxicated within hours - that'd make more sense.
You can have sex right up till call time if you so desire.
Who the hell cares and more to the point why should they?