Once Byron Bay is upgraded, you'll gain the option to open a new festival site. Your choices will typically be the Outback or Surfers Paradise. The order in which you open these doesn't significantly impact the overall progression, but each offers a distinct environment and set of challenges. It's recommended to alternate between them to experience the full variety of the game.
To open a new site, you'll need to accumulate a certain number of fans. Continue participating in events, completing Bucket List challenges, and engaging in PR stunts. Each new festival site brings new event types, such as Cross Country races in the Outback and Street Races in Surfers Paradise. Focus on building your fan base to unlock these new locations and further expand your Horizon empire.