They all tend to choose places of leisure that (as Fussell quotes from Arthur Shostak's book Blue-Collar Life (1969)) tend to affirm what they already know about rather than something that will challenge their world-view. Fast-food and everything predictable is the mark of the proles. Hence the popularity of McDonald's, and all you can eat buffets.
Fussell states that the high proles are afraid of slipping down. As a result high proles are constantly pointing out the differences between them and the unskilled labourers. They have a certain contempt for the lower classes (because they haven't gotten as far) and for the middle class (for being slaves, sheep, to big corporations). They would probably be the ones buying expensive televisions, stereos. (On the other hand, the uppers and tops either don't own a television in their living room, or hide it away behind some painting.)
These brief overviews of how Fussell defines the classes is very much a ``straw man's'' version. But is stated to give an overall picture of what Fussell is stressing as important in the classes. That social class is not necessarily linked to money. In other words, money is a necessary but not sufficient component of the upper class. To underscore this point, in fact, Fussell states that you can be the richest person in the world, but immediately drop to prole or middle class status based solely on your elocutive skills.