It is a semi-private setting. You are not supposed to play loud music if you were asked not to, you are supposed to pitch in by separating recycling and trash so the hosts do not have to, etc. I try to cook for my hosts when I am staying with friends overnight or more, so that they remember me as a welcome guest. Loading the dishwasher is a nice gesture, unless the hosts have to have their dishwasher loaded "just so", and then you do not want to interfere. Those things. But say, if I masturbate at night while I am staying with friends, I keep it quiet (which is difficult for me). I do not ask my hosts whether I can masturbate in their house - it would be a ridiculous question. I would not scream at the top of my lungs, of course.

It seems that the analogy here is as follows: had the couple consummated the marriage in plain view of everybody without asking whether it was OK, that would have been akin to screaming at the top of one's lungs whilst masturbating. But since they did it in private, I do not see how the hosts' sensibilities would be affected.

Comic... will they figure out that you consummated at their residence? Is it important where you did?