^ But it's not just the bride and groom. If it's a segregated wedding, many women will come dressed differently and will not want to be photographed.
ALHAMDULILAH i take hijab and i don't like anyone taking my picture when i am not wearing a hijab. so if i am at a segregated party where i am not wearing a hijab i just don't get my picture taken, or i put my dupatta around my head for the picture, if anyone of my friend is taking a picture. so usually it's not a problem for the hijabi guests becaues they can ask the person to not take their picture, but i can see how it can be a problem for a hijabi bride becaue she can't say much from the stage if someone is taking a picture. so it's better if they anounce it or put it on a card.