The next time you’re invited to a wedding, don’t be surprised if the invitation says “no cameras allowed”.

Roughly one third of couples are now having “unplugged weddings,” where guests are asked to turn off their gadgets, and put away their cameras.

What’s the point of having an unplugged wedding? Experts say the main reason is to keep guests from blocking the official wedding photographer. After all, they’re the ones being paid to take photos. But many times, photographers have to compete with guests, elbow to elbow, for a shot of the couple exchanging rings, or their first newlywed kiss. And if there are too many flashes going off at once, the extra light washes out the color, and ruins the picture.

Plus, the official photographer doesn’t want you photo-bombing his shot and popping up in a picture where you don’t belong.

Also, it turns out some couples feel intimidated by more cameras. They say it makes them feel like they’re being chased by paparazzi. Plus, it should go without saying: When guests are fumbling around with their gadgets, they’re not paying attention to the ceremony itself.

Experts say the “unplugged” trend is designed to protect those once-in-a-lifetime moments when there’s no opportunity for do-overs, like that one special shot of the bride’s father crying, as he walks her down the aisle. But some guests will step in front of the official wedding photographer to get their own shot, and then upload it to Facebook before the ceremony is over! 

But etiquette expert Anna Post says don’t post anything to social media before the bride and groom do. She calls it “Facebook scooping.” You’re getting the scoop on the wedding and stealing the couple’s moment. So don’t post any pictures until the happy couple does.