Originally Posted by green_rd
LF - I would opt for the space center. Transit time from port to Epcot would probably be around 75 minutes each way with little traffic. Add time to enter and exit the park and the fact that you never really get the full advertised port time by the time the ship clears customs, etc. You really wouldn't get too much time in the park. There is so much to see I can't imagine teasing myself for 4 or 5 hours.
I vote space center also because I really enjoyed it a lot. Very interest bus tour.