Not a good place to go as a photographer. Of course, diving with all these hammerheads must be fantastic and you have the opportunity to make some amazing shots. Yet the bigger the group, ther less the divemaster will be inclined to wait for to optimise your shot.
I often dive with some friends that have no camera. Not ideal, but they understand that I take my time. I had some bad experiences on trips with diveguides that just swam on in front and didn't look back. In such a case it's nice when there are more photographers, you look at each other and think 'let him go'.. Not a good idea in strong currents, of course. It's amazing how some diveguides are so unaware of their clients.