If I understand the question, then TrvlPro is right. You just have to make sure you put the tag on the luggage (bag tags should come with your documents) and there will be a porter at the port to take your checked luggage. As TrvlPro stated, don't leave valuables in your checked luggage. Your luggage will be delivered to your stateroom by about 7:30 pm or so at the latest on the day that you set sail.
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)