You've pretty much got it, except that the Mark of the Beast doesn't get implemented until after the Rapture, and those who take it have no chance at salvation. It's strongly correlated with conscious worship of the Antichrist, so it's not like those who take the Mark don't know what they're doing. See Revelation 14:9-11.
Anyone who doesn't take the Mark and survives the Tribulation (presumably) gets to live into the Millenium, although at some point they'll have to make the same decision to accept Christ as Lord just like we do now.
You've pretty much got it, except that the Mark of the Beast doesn't get implemented until after the Rapture, and those who take it have no chance at salvation. It's strongly correlated with conscious worship of the Antichrist, so it's not like those who take the Mark don't know what they're doing. See Revelation 14:9-11.
Anyone who doesn't take the Mark and survives the Tribulation (presumably) gets to live into the Millenium, although at some point they'll have to make the same decision to accept Christ as Lord just like we do now.