Author POV.
So the ceremony day is today , the attendents of both empires are welcoming the guests from all over the Omniverse because the grandfathers of the two people who are getting engaged are well known throughout the Omniverse because they are like legend who have surpass the limit of their various bloodlines and racial powers and who are standing at the absolute Peak of and majesty, so people who heard that the grandchildren of such powerful entities are getting engage to form an unbreakable and undefeatable Allies ,so most of the people where invited to an event that occurs rarely in one's lifetime and so people were willing to come and witness history in making between the crown imperial princess of the Omni Saiyan and the crown imperial Prince of celestial race and to the crown imperial princess who defied all odds to be impregnated with the crown imperial Prince child which itself was an impossibility to accomplish.