Also, the past two times we were on the Magic, there were two days (specific time frames) that we were offered 5 minutes free internet service. Five minutes goes by really quickly, but I did find I was able to check my email in about ten, and only pay for half. The navigators mention it, from my experience.
One of the things I love about being on the ship is not having easy/cheap access to a computer or laptop. I always bring 5-6 books to read and lots of music to listen to--two things that I don't do as often when the computer is sucking my time away from me!