cheap carvinal or royal caribbean cruises for after christmas in 2010 in caribbean? great myrtle beach places?

Would Carnival or Royal Caribbean be a better cruise choice? It seems Royal Caribbean is more expensive. I’d like to find something cheap in the Caribbean for December 2010 after Christmas. Any ideas? Any great myrtle beach,sc places that are in the center of everything that would be a good recommendation, that is right on the beach?


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