Boning in an airplane bathroom is for suckers. And contortionists. Anyway, for something truly impressive, do your boning on a luxury submarine. The Mile Low Club (87,500/night) will take you off the coast of a Caribbean island of your choice, in a leisure submarine (which we didn’t know was a thing), which comes staffed with a captain, a chef, and a butler. Not included is Ben Stiller, in one of his more forgettable roles.