We've never heard any amorous adventures from adjoining cabins however once when my Mother-in-law was on a cruise with us and in the cabin next to ours, as we were getting reading for dinner my wife asked me if I thought she should wear her black blouse or her white blouse. The phone immediately rang and it was my mother in law "Wear the white blouse honey.".
We all got a big kick out of that.
I always bring ear plugs with me when I travel for plane trips and motel / cabin rooms. Just to be safe.