Some of our guests are living in the same household...example - I have one home that is a mother, father and five children, each of the children with a guest. Technically 12 people in the same house. We are having a buffet, so no problem there but, is it ok to send one invitation to the "XX" family and then let them ask if that means a guest for each child?? (mind you, the children are a 16 and over)...or do we really need to consider each child in the household as their own invite (X + guest) and send multiple invites to the same house? Suggestions?? THANKS!!!