The Marriage Feast is the supper that follows after the marriage has been performed.
There is one thing about this Feast, it will be such an honor to receive an invitation and to be present, that the angel said to John, "Write" put it down in black and white lest you forget, do not trust to tradition lest the world never hear about it, but, "Write, blessed are they which are called unto the Marriage Supper of the Lamb."
What a supper it will be! God can put on a real Feast. Not a black tie affair but a white robe affair!