We had a loud fight and the whole deck heard it

My husband and I had a spectacular argument on night three. About what? I genuinely cannot remember. Something about dinner reservations or shore excursions. The point is we were loud. We were on the balcony. Sound carries on water. I know this because the next morning at the buffet, the couple from two cabins down approached us and said, very gently, 'We just wanted to check you two are okay.' They had heard the entire thing. We were mortified. Then they said 'For what it is worth, we think you were right about the lobster.' I did not even remember discussing lobster. We apologized profusely. They became our dinner companions for the rest of the cruise. They are wonderful people. The argument is forgotten. The embarrassment is forever.