What is the etiquette for guests taking photos at a wedding?

The key is to respect the couple's plan for the day. Many couples now ask for an unplugged ceremony, meaning no phones or cameras at all during that part. If they do, please switch yours off and simply watch. If they haven't said anything, a good rule is to take a few photos discreetly, then put your phone away. During the reception and evening, you can be more relaxed, but always stay out of the professional photographer's way. Don't stand in front of them or call the couple's attention when they are posing. Also, wait until the couple posts their own photos before you share yours on social media. This lets them control the first images of their day. If you are unsure, ask the couple or a member of the bridal party what they prefer.