What is an unplugged wedding...
A ceremony is unplugged when the couple specifically requests no use of phones, tablets, cameras, etc. during their ceremony. It's a way to ensure guests are present for this pivotal moment! And it allows for better photos- no one gets in the way of the photographer or videographer AND we get to see people's faces in photos, rather than capturing guests look at their devices.
PRO-TIP:
Use all three! I find Tip No. 2, a spoken reminder from your officiant, is the best at warding off unwanted phone use during your ceremony. There's something about being verbally told in front of everyone that keeps the cell phones away! I'm not one for peer pressure, but it sure works in these situations!