I just heard about the group shot idea recently and I thought it was a great idea. If you're very close with your family and friends (and they're game) then you should definitely add this to your photo wish list.
I'm engaged to a wonderful man and planning my own wedding. Like so many brides, I intend to host this lovely event on a limited budget. I'm approaching this without the wedding industry "to do" list and with a focus on the marriage and graciously welcoming my guests.