Duke appears to be much more interested in actively playing poker with his buddies than poking his really, nubile wife (played by Nancy Martin underneath the name Meg Peters). She talks him into a quickie to the waterbed and they complete the requisite functions from each of the requisite angles. https://yesbookmarks.com/story17130429/james-has-arranged-for-a-bikini-clad-bimbo-to-look-for-the-social-gathering