How does this prepatch event work regarding getting currency?

[Punyelf-draenor (Punyelf)]

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Radiant Echoes Improvements Are Now Live

We’re working on major updates to the Radiant Echoes event, based on your feedback. Since the event went live, we’ve been working to address two main concerns: the wait time for the event, and the rate at which you can earn rewards. We’re quickly changing it so that the event rotates between zones once each hour, and while the Radiant Echoes are active in a zone, they will remain up for the entire hour. Now you’ll defeat the memory scenarios that surface, and after enough are defeated, the zo…