Aimeedyan said:It may have just been more a comment to get across that each child is going to cost a pretty penny to attend, and for you to think twice before bringing them. Why they chose to invite your family knowing this is beyond me, but that's what it sounds like to me.
ITA. "And family" is inviting the kids - and I think it's totally weird of them to invite them and no want them to come. I think you went above and beyond double checking to see if they were welcome - but I guess you got your answer.