I just picked this up from Debbie and Clay's WC journal. Maybe this is why Suzie and I couldn't get our calls through; we were in port when we tried.
Voyager is part of the Cingular Cruise Ship cell phone network. This means you can pay a roaming charge of $2.49 and use your Cingular phone. Clay is using a Cingular-based Blackberry that provides unlimited data (with no roaming charges) for $64.95 per month. Since the ship is acting as a Cingular cell, he has been able to get his email essentially all the way across the Pacific. The only time he was without it since leaving LA was about 30 minutes one day, and when we were in port in Nuku Hiva. (This ship turns the cell signal off when they enter a port.)