Last June, we rented at the aipport and dropped off the van at pier 48. After the cruise we did the reverse, rented at the pier and dropped off at the airport. There is a shuttle from the cruise pier to pier 48. There is a rental desk at the cruise terminal. Fill out the paperwork there, shuttle to pier 48 and pick up the rental. We spent two days before our cruise in Seattle. Our return flight did not leave until midnight so we had a whole day upon our return to spend in Seattle.