1. Create a 'Shot List'
Especially if you don't know the couple and the families (and even if you do), ask the bride and groom to make a list of all the shots they will want. Remind them to include important friends, family members, and people combinations (one of the bride with her sisters, mother and grandmother, another of the groom and all his brothers, etc). Ask them to be specific about other shots as well (do they want table shots?) and to warn you of any obstacles they might foresee (like a relative who refuses to have his picture taken).