Out of town high school graduation
(Corpus Christi Texas)
My mother in law wants her sons to attend her great grand daughter's high school graduation. Of course the son that is the grand father of this child will be traveling from Tennessee to Texas for the event. The other two sons live at least 6 hours away and have not received an invitation to date. I think it is out of line to show up to an event if you haven't been invited. I don't mind sending a card with a gift/gift card without receiving the announcement. Is there a middle ground? What do you suggest?