We have taken 17 cruises, so I have learned a lot. Now I pack very little. A sport coat and several pairs of dress slacks for my husband, cargo pants or shorts when you get off the ship, and several pairs of comfortable shoes. For me t-shirts, shorts, cover-ups, black and white dress slacks and blouses for dinners and one "fancy" dress or as my Grandma used to say "Sunday go to meeting" dress or pant suit, white shoes, black shoes and a couple of swim suits. With the airlines charging for baggage now, we try to get most everything in one suitcase and a couple of carryons. You can if you choose rent evening clothes and tux on board. Have fun and enjoy.