A) Of course we don't, many a great session is had by two players without role play an added bonus is I get you over my knee straightaway <wg> and you can relish in the spanking/C.P without having to think what you are going to say next.  I may use a few keywords so that you can get your head into why you are deserving of punishment but I don't expect you to start reciting any Shakespeare!! (Well, not on the first meeting <ewg>) ONE must always remember it is fun, it is enjoyable, it is relaxing, once it stops being enjoyable then it's time to stop playing.