In the final episode, The End, how did Lapidus know the coordinates to get off the island if the island moved since Faraday figured out the coordinates? Also, we never knew if they got off the island. Did they?
I don't know about the coordinates, perhaps they were close enough to get them off the island with minimal disturbance. I do believe that they got off the island. Kate said she missed Jack, which I took to mean it was a long time between Jack's death and Kate's death.