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Alysonma said:
Yes you can if you have internet package it works anywhere in the world


Their website says only US, Puerto Rico, and some places in the Caribbean. That's why I was wondering if I'll be able to access it while on island.
Further research has turned this up (from the Sirius FAQs page:
The SiriusXM Internet Radio service is available to those at least 18 years of age in the 50 United States, the District Of Columbia, and Puerto Rico. Some SiriusXM Premium Online Pricing Plans require a qualifying Satellite Radio subscription; and the SiriusXM U.S. Satellite Service is available only to those at least 18 years of age in the 48 contiguous United States and the District Of Columbia, with Sirius also available in Puerto Rico (with coverage limitations).