Well, unfortunately it do happen. Out of courtesy , the attending photographer may tell the organizer in charge. Please do not hesitate to keep quiet, we want everyone to enjoy. XD
All photographers know what is a group shooting and what is the objective. A team play and not individual shoot. Omg, I sound naggy!! =X
Maybe the weirdos doesnt really understand english word, must give chance la bro. Hahaha
So sorry I cant make it I got something on this sunday I join u next time hee keep me update lol