According to Theresa, our Club.com manager on the Mariner, Skype and streaming video have been blocked on the entire fleet because they tie up too much bandwidth. She doesn't know if Corporate will feel the bandwith upgrades in drydock will be sufficient to unblock them. There have been many complaints and Theresa strongly suggests that guests put requests for Skype access in their comment cards. Even if you are on for only a 7 day cruise, add it to your comments until Regent provides enough bandwidth to handle it. Providing cell phone availability is better than satellite phone costs, but at $1.99 per minute (my cost on Cingular) it's significantly more expensive than the cost of Skype.
Jim