1. You're going away on a cruise man, what's wrong with you

Leave the emails until you get back.
2. If you're taking your own laptop you could always install OE or similar and then you could download them and do whatever you like.
3. If you're using a shared computer on board ship then I wouldn't want to be downloading anything to it, and I certainly wouldn't want to put any sensitive/personal information into it, as it will then be available for everybody to get to potentially.