First off, it's technically more like the "Five or Six Miles High" Club, because average cruising altitude for a passenger jet is 30,000-35,000 feet. As to myself, how--quickly. Where--someplace over Iowa, United States, in a Boeing 747-400. With whom--I don't kiss and tell. Or fuck and tell, whichever.
Want to spend some time wallowing in a Recommended Read? Pick one! Or two! Or seven!
About the only place on a plane for the sort of privacy need is the toilet -- frankly what pleasure is there in two adult people squeezed into a small space like that attempting to copulate?