I was in a similar situation with ur friend and his uncle. However, it was slightly different. My friend and I were the backup-photographers hired by the couple. We were responsible to shoot the pre-wedding scene at the groom's house, while the paid/main photographer was shooting at the bride's house and also responsible for shooting the ceremony and bridal shots. We were doing this assignments for free for several reasons..one is that the paid PG is a supposedly a well-known PG in melb who have won international awards for his shots in fashion and adverts. He's the best mate of the groom's cousin and is charging 2k for 700 photographs. This assignment is also our first assignment (so we don't have port folio for shooting wedding - we re uni students pursuing our hobby), so we didn't have concrete grounds to charge the couple when the paid pg is charging like 2.8 per pic (our initial plan was to charge 5 dollars - basically just to cover the cost incurred - like transport and stuff. And we was going to charge by per pic. Not obligated to buy any if they don't like our shots.). Basically, this shoot is more to build our port folio and prepare ourselves on what to expect to actually shoot the entire wedding. I did tell the couple to notify that paid PG about them 'hiring' us to shoot the wedding as backups and we would not get into his frames. The reply from him was that he was totally cool with it and actually did not mind to share pointers with us. On the actual day, my friend and I used zoom tele lenses and shoot mostly at 100-300mm range at the ceremony, so that we did not get into his frame. I was way behind and at the other corner taking candid shots of both ceremony and guests. My friend was shooting behind him ~ 1 m, shooting @ 200mm. I can understand how annoying uncle bob and cousin Joe/mary can be. I was shooting under 3 limitations, avoiding paid PG, guests and unsuspected standing-shoulder shooting by uncle bob or cousins. It is kind of expected anyway. Besides, the magical moments should be captured by the paid PG anyway. After the paid PG finished his shots when the couple walked down from the alter, I then walked along the concrete wall and took a couple of shots. One of the best men (supposed to be the friend of paid PG) asked why didn't he take pics of the events like what I did. He bluntly replied softly, " I don't have insurances for that. I wonder who's the official PG?" During the bridal shoots, it was agreed that we will be shooting at his back and also shooting the scene of the bridal shoot session. In addition, he was supposedly to give us pointers on wedding/bridal shooting. After 2 clicks on my cam, he told the groom to tell us to stop shooting. He said that the poses, lighting and set-up were his and we have no right to shoot. Again, my friend and I were shooting several metres behind him and without flash. In addition, we were also shooting the whole bridal shoot scenes. Like the bridesmaid and best men waiting for their turns...the PG shooting the couple, etc. It was a waste of time for us to travel so far and not to shoot anything and stood there like idiots with cameras. So we left shortly after that. We did waste quite a fair bit of time on why the sudden change of attitude... one - intimidated by the EX nikon lenses that my friend borrowed (don't he know that PG is more important than lens in making a good pic?), 2nd - i'm willing give my life away by standing on a metre high concrete slab and he don't (oh...he practically kneel for all his shots-maybe he like to be well-grounded), 3rd - he was expecting us to have pNs cameras, which doesn't make sense (the red or green af-assist lights), 4th - he really think his poses and lightings are deserved to be copyrighted. 5th - he's afraid that his reputation will be tarnished if his shots re inferior to us or just as good as ours (which should not happen if his reputation is true).