Yesterday I received the red oath invitation letter (It is not pink) for myself

I have two questions:
1., I applied for my daughter also, who is minor (16 years old). I didn't received a separate invitation letter for her, and I have no instruction in my oath invitation letter regarding her oath. Do you know guys if a minor children will receive a separate invitation letter? (Her E-cas is updated, showing same day and hour like my oath.)
2., The guests who are coming to our oath ceremony should they bring any ID with them, somebody will check?