According the Word of GOD-the Word is GOD- the celebration of the Marriage Supper will be after the War against the Dragon -Revelation 12- not before, as you are imagining. Didn't you read? Revelation 12:v.9-10 -
9 The great Dragon was cast out (AFTER THE WAR AGAINST HIM AND HIS MESSENGERS), that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his messengers were cast out with him.
10 And I heard a loud voice saying in heaven, Now (yeah, Now, after the battle against the red Dragon), is come salvation, and strength, and the KINGDOM of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night.
There is nothing in your quoted reference that says the Marriage Supper is after that war on earth when he is cast out to earth to start a war.
Indeed, the devil is cast out from Heaven from continuing his accusations against the brethren whose home is in Heaven because the rapture has taken place for why he was cast out. The devil was shut out so the Marriage Supper will be held without him around accusing the brethren.
Note that this war is in Heaven for why and how the devil was cast to the earth for the devil to start that war on the earth after the rapture event.
Revelation 12:7
And there was war in heaven: Michael and his angels fought against the dragon; and the dragon fought and his angels,
8 And prevailed not; neither was their place found any more in heaven. 9 And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world:
he was cast out into the earth, and his angels were cast out with him.
10 And I heard a loud voice saying in heaven, Now is come salvation, and strength, and the kingdom of our God, and the power of his Christ: for the accuser of our brethren is cast down, which accused them before our God day and night. 11 And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.
12
Therefore rejoice, ye heavens, and ye that dwell in them. Woe to the inhabiters of the earth and of the sea! for the devil is come down unto you, having great wrath, because he knoweth that he hath but a short time.
That verse 12 testifies of the raptured saints rejoicing in Heaven as dwelling in them and woe to the remaining inhabitants of the earth because the devil will be waging war on all those unrepentant saints & former believers that are left behind for not being ready nor willing to go.
13 And when the dragon saw that he was cast unto the earth, he persecuted the woman which brought forth the man child.