Wow! Sparrowhawk that sounds like a good way to spend some time on a boat. I've never really been tempted by regular cruise ships. Most people I've talked to say a cruise is continual standing in line. With the amount of people they stuff on a boat there is a wait for everything. I guess I'm not much for "corporate" vacations, I hate Disney world type parks as well. I'll admit it, I'm just a little bit jealous.
I wish you the best of luck with your trip and your writing.