As not all cruisers go Southampton – Southampton, these tips will apply to any fly cruisers, as much as for any holiday.

Copied from Independent Traveller.com

http://www.independenttraveler.com/travel-tips/packing-and-accessories/what-not-to-pack

My personal advice comes from someone wise, whose name I forget.  It is as follows:

Lay out everything on the bed. Everything. Bottles, clothes, gadgets, money, everything you intend to take.

Then take out half the clothes and put in twice the money.

Job done.

And a last word of wisdom from Dave Gorman: it is always cheaper to buy socks at the other end than to pay extra for having packed them.