The first is food preparation. Since the length of the cruise is long, many of the ships will not have completely fresh vegetables and fruits available at all times. Also unless you are traveling on a luxury liner, many of the research ships – made into small cruise ships – are not equipped to serve gourmet foods. It is not that you will go hungry or even dislike the food, but you should expect this difference when on the ship.
The second thing to watch out for is sunburn. This seems ludicrous because of the climate there, but because there is a time of almost 20 hours of sunlight a day and because the sun reflects so much off of the snow and ice, many people will receive sunburn and not even realize it. So make sure you bring some sunscreen with you on this “tropical” cruise. Another health consideration is that you are cruising to an area that does not have complete modern medical facilities. Though the trips are not overly physically strenuous, you need to take into account pre-existing illnesses.
Another consideration is when you actually go onto the mainland. First of all, you need to pack clothes that can withstand the cold temperatures. The second thing is that the cruise companies want to keep the habitat as natural as possible. Therefore, there is no food or drink allowed off the ship. So you need to make sure you fill up before you head out.