Well Mush has already said this:
JOINT SESSION: In response to a question, the president said that he would only address a joint session of parliament if the speaker and all political parties assured him that they would listen to him with discipline.
“I don’t consider it a requirement” was the president’s reply when a questioner asked if it was no constitutionally binding on him to address the joint sitting of parliament at the beginning of each parliamentary year.
http://www.dawn.com/2008/06/08/top1.htm
It won’t be a bed of roses for sure