An early, secret 7-year party in heaven. (not in scripture)
A party which excludes martyrs who are beheaded for resisiting God's enemy.
What "party"?
Do you mean "the 24 elders" falling down at His feet to worship Him and cast their "stephanon/crowns" before the throne? (Rev4:10 , 5:14, etc)
Again, "the wedding FEAST / SUPPER / FESTIVITIES" only commences upon His "RETURN" to the earth (and IS the earthly MK age--at least its inauguration);
NO "SAINTS" will be missing from that!! (those "saints" who come to faith FOLLOWING "our Rapture" will either be "still-living" to enter the MK in their mortal bodies [capable of reproducing / bearing children in the MK age], or if they died during the Trib years, will be "resurrected [definition: 'to stand again' (on the earth)]" and thus will not miss out either!)
I'm unsure why you believe any "saints" (of ALL time periods) will MISS OUT on the "FESTIVITIES"... pre-tribbers do not espouse such an idea as you are suggesting of the pre-trib view (a "strawman" viewpoint of it)