Take the all of the pictures before the wedding is the greatest advice.  It gives the bride and groom alone time to TALK.  When you wait for the actual ceremony the bride and groom don't get to talk.  I still remember some of the things my husband said to me the first time he saw me.  This also allows the ceremony to be less stressful and the guest don't have to wait.  TAKE ALL PICTURES BEFORE THE WEDDING.  Great Idea!!!