Overheard bridesmaid advice
 

I often say something in the morning when I first come in like, "Just ignore us. We're flies on the wall. We're trying to get natural, candid shots." I watch the mental clockworks turning, and usually saying this relieves some stress -- "OK, I'll relax. I don't have to pose for you guys or anything. I'll just focus on what I'm doing". But then it creates some -- "But what if you catch me at a bad moment?" So there's this anxiety over what actually you're filming if you're not, like a photographer, filming posed, smiling shots. But I figure that announcing your intentions relieves more stress than it creates, so...

Recently, heard one bridesmaid advise another: "Just remember -- A-B-G. Always Be Giggling. And all the photos will turn out good."

I think that advice works for me.