I think the trick is to wear outfits that you can co-ordinate with other outfits. A good example may be to pick a colour scheme then go with that; for example I am packing a lot of beige. Several other colours go with beige. Shorts ,capris and pants can also be worn more than once. For formal wear, a good choice may be to bring one skirt that will go with several other tops or blouses. Picking one colour for formal wear will also eliminate several pairs of shoes in your suit case. Remember black shoes (the old standby) goes with everything. I hope I helped and have a great cruise!