You asked, “How will pre-trib’ers fare in great tribulation when they don’t even understand scripture?” Well since I do understand scriptures, and since we will be at the marriage feast, what is happening on Earth at the time will be ‘out of our ‘ken’’. Are you expecting to be here during the Tribulation? Do you want to be here? You could maybe be one of the 144,000 The Holy Spirit selects to evangelize the dying world during the two segments of the Tribulation ... but only if you’re member of one of the twelve tribes from which He will select, excluding Dan.
Are there two marriage feasts? No just like there are not two returns of Jesus.
What about those saved still on earth after your imaginary rapture? Are they not part of Bride of Christ, have no wedding? Stop and think, this pre-trib nonsense falls apart at every turn when you just read the scriptures on the sequence of events.