Hmmmm, let's see what the Christ fellow said
Luke 20:34-36 NET
So Jesus said to them, "The people of this age marry and are given in marriage. [35] But those who are regarded as worthy to share in that age and in the resurrection from the dead neither marry nor are given in marriage. [36] In fact, they can no longer die, because they are equal to angels and are sons of God, since they are sons of the resurrection.
"They can no longer die" those resurrecteds.
Rev 20:7-15 appears to say the resurrection takes place AFTER Satan gets the final boot, not during the 1000 yr reign or before. It's at the point where the books of life are opened. If you were decent enough you get resurrected to life and as Jesus said "can no longer die". If you were plainly a no goodnick you get trashed and are not resurrected.
Seems simple enough to me.
As to there being death in heaven or not, no one knows. I do know they've got some angel police.