I never noticed (until someone kindly pointed it out when I asked about the cruise) that the very first post on the Themeparks Board is about the cruises. It also includes links for people who want to share a cruise.
The info is very helpful. I followed the instructions about booking the cruise and was successful. It helps to make a "trial run" with the phone call to understand all the various #'s you have to punch in --- I wrote those down and helped speed up my 6:58 AM call. Good luck!