One other thing that wasn't mentioned regarding phones. If you have a smartphone, make sure you turn off the data feature. Otherwise the phone will constantly be gathering data (checking for e-mails, etc). and you will be incurring those international data rate charges as well.
2007 - Majesty of the Seas (Bahamas)
2009 - Enchantment of the Seas (Western Caribbean)
2010 - Freedom of the Seas (Western Caribbean)
2013 - Golden Princess (Alaska, roundtrip from Seattle)