PS the orders won't drop from the slaves, so you have to hope that one of the two slavemasters will do a favour to you; to have more chances of dropping them you could try to kill the first pack of nagas when you enter into the instance (and two other pulls along the way) but with my pre-kara gear (24k armor, 37% dodge and 14.2k hp plus a badge of tenacity CD to use) it's a fairly challenging fight because after you killed one you won't make it without CCing the other mob with a bash+barkskin+cyclone and a couple of healing touch; remember to keep up demo roar during the fight since it gives a good mitigation.