Will the purser's desk cash Traveler's checks for you?? Are there ATM machines on the Mariner of the Seas?? I can't use plastic for EVERYTHING on shore and don't want to be carrying a lot of cash either.
Yes you can cash travellers cheques onboard and they do currency exchange. All the cruise ships I've been on have had an ATM but I think they charge a hefty fee (maybe someone else can give the exact charge?)
Depending on where you're going $ may be accepted in your ports of call.
Radiance of the Seas San Diego to Vancouver
June 2010 Vision of the Seas Stockholm, Tallinn, St. Petersburg
January 2010 Golden Princess Hawai
May 2009 - Brilliance of the Seas Egypt and Eastern Med
September 2008 - Serenade of the Seas Alaska
December 2007 - Freedom of the Seas Eastern Caribbean
June 2007 - Voyager of the Seas Mediterranean
December 2005 - Explorer of the Seas Western Caribbean
The ATMs onboard RCi charges about $5 a transaction. Also, since they are satellite linked, they tend to go very slow and sometimes don't complete the transaction. To make sure, only use the onboard ATM while in a port.
Majesty of the Seas - 10/03 & 02/07 & 11/08
Enchantment of the Seas - 10/04 & 10/11
Mariner of the Seas - 10/05
Vision of the Seas - 10/06 & 09/07
Carnival Liberty - 10/07
Adventure of the Seas - 9/08
Ruby Princess - 12/09
Voyager of the Seas - 9/10
Carnival Spirit - 11/10