This is the email that I got from rs.com:
Thanks for your question regarding presales and the newly announced Rolling Stones tour. We're planning as best we can to ensure that Fan Club members will be able to use Fan Club passcodes around the world. The Fan Club will issue alternate codes if the current codes cannot meet requirements abroad (this depends largely on contracted ticketing agents in other countries). We will be sure to keep you informed via the site and the Newsletter.
Cheers,
Member Support
RollingStones.com
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Keep On Rolling