I am wondering if they will be interested in Pinball for longer than an hour. Analog games dont seem to take the same attention hold that screen games do. I would suggest maybe offering up some mini style non-point based tourney's that rely more on accomplishing goals rather than score. This will help teach them the tactics of the game, while giving them objective based goals that aren't usually obvious to new players.
Just now noticing this already happened, so how did it go?