Same guy and I have shown up two different times waiting for this ceremony to start today and after an hour wait each time, nothing happens. Checked and rechecked journal, but nothing seems to work on this guy. I've done this quest on 12+ toons and this is the first time I've experienced this problem.
Update: decided to go back to the camp, unequip the necklace, and camp to myself. Then reequipped the necklace. That seemed to fix the problem.