In which case the timing is pretty rough. If the SEA departure was moved to midnight it would work okay for people boarding in the early afternoon in either FLL or MIA, and would allow a return departing around noon or 12:30, providing enough time for disembarking FLL/MIA cruise pax to get to the airport. An 8-something AM departure from FLL will leave both FLL and MIA cruise pax with nowhere to go besides MIA (or FLL) for connecting flights with other carriers. I really don't get AS' timing.