You kind of do the reverse of what you did getting down there. On the way down, you had the shorts packed in the carry-on. On the way home, you have the warm clothes.
On Sea Princess, we had to have our checked luggage outside before bed. In fact, they wanted it out before dinner, but that just didn't happen. We wore jeans and short sleeve shirts and packed very heavy sweatshirts. My cousin picked us up from the airport and brought our winter coats and gloves with him.