Luggage and bags: as little as possible.
Clothing/Shoes/Weather Gear: sunscreen. although it's cool and dry, the sun will bake your skin to a dark brown in a matter of days.
Miscellaneous: bug spray if you can't stand bugs. those little whitesocks will drive you mad when they're thick.
Clothing/Shoes/Weather Gear: RAIN GEAR necessary if spending anytime outdoors. It rains here all the time! Long underwear if sea kayaking and camping.