The only thing I found was that there are WIFI hot spots on the ship. I did not find anything about in cabin.
Price (it is stiff):
The cost for Wi-Fi access through your own laptop is:
Base rate is $.50 per minute or choose from one of our prepaid packages:
$25.00 for 60 minutes
$35.00 for 90 minutes
$50.00 for 150 minutes
SS Norway (12 times) '85 - '97; Radiance OS 06/01; Island Princess 11/04, Grand Princess 11/04/05, Golden Princess 7/21/06, Golden Princess 2/24/07, Explorer of the Seas 12/23/07, Island Princess 11/15/08
Don't forget too, you can also use internet cafes in the different ports, most are close by the cruise ships and are very reasonably priced. Almost all of them are high speed connections, so you can check and send e-mails quickly and still go on and enjoy the ports.
The only RCL ships that have wi-fi in all the cabins are Freedom class. The rest use hot spots, if you don't have all the info yet, the RCL FAQ will help you figure it all out.
USS Henry L. Stimson-SSBN 655 Gold (4 Patrols 1988-1991)
USS Daniel Webster-SSBN 626 Blue (Conversion Crew)
USS Nebraska-SSBN-739 Blue (5 Patrols 1995-1998)
USS Wyoming-SSBN 742 Blue (3 Patrols 2002-2004)
Grandeur of the Seas-10/28/2005 - 10/13/2006 - 10/05/2007
Mariner of the Seas-4/2/2006
Radiance of the Seas-3/17/2007
Grandeur of the Seas-4/12/2008 - 4/19/2008- 10/30/2008