Is there a way for our guests to RSVP for the total number of their party attending? My fiance and I both come from large families; kids are also invited. We need a total tally of who is all coming to plan for food. Our parents have included some extended family members and their kids whose names we're not 100% sure of. We don't mind as our parents are helping pay for the wedding, but how do we get the rsvp for the children w/o having to list them as just Child of SO&SO?