In case there are others considering doing this as well, here are some tips.
In terms of blogging live from the cruise, the biggest tip I can give anyone, if you're planning to include photos in your blog, is to either reduce the photo size in the menu of your camera to its lowest setting *or* download them to a computer (if you have a laptop) and use whatever software you have to resize them to 100 Kb or less. The internet connection on the ship is typically painfully slow and can be intermittent. People, not knowing, will try to upload 3-5-10 Mb photos and after 20 minutes of grinding (and using your minutes), you'll get a message back that the upload failed.
The 2nd tip is do as much as you can offline.
The 3rd tip has to do with the way they have the Magic internet set up. You have to connect *and* disconnect every time. Closing your browser and even shutting down your computer doesn't necessarily disconnect you. you must consciously go through the process of disconnecting; otherwise, your minutes will rapidly evaporate.