Ticket Exchange for Moscow Show
The latest news from Russia is that tickets for the Moscow show will have to be exchanged in person to be valid for the new venue. Details of this exchange are still being worked out by the ticket agencies. An additional 16,000 seats will be made available at the larger capacity venue, Luzhniki Stadium. The move to the larger venue only became possible after government intervention according to the article in The Moscow Times, which you can read here.
Source: The Moscow Times