Take plenty of sunscreen and use it religiously, particularly on your face. When I was cruising frequently over a few years time my face aged considerably from the sun as the rays come not only directly from the sun but from reflection off the water.
Also, I gained weight on literally every cruise as the food was so tempting looking and tasty. Although I used the onboard gyms and walked the promenade decks I still gained weight. I learned to diet before and after cruises.
Although I love cruising it has been said cruising is for the newly wed, the nearly dead and the overfed. From my experiences I concur.
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"No one is more hated than he who speaks the truth." Plato
“To argue with a person who has renounced the use of reason is like administering medicine to the dead.” Thomas Paine
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