Complex sentence: Rather than red-carpet events, it encourages film makers to mingle with the crowds, giving the event a unique atmosphere and a fiercely loyal following locally and internationally-around 90% of tickets are sold to regular supporters.
Split into simpler sentences: Rather than red-carpet events, the festival's design is to encourage film makers to mingle with attendees. As a result, the festival claims having "a unique atmosphere" and a "fiercely loyal following" locally and internationally-around 90% of tickets are sold to regular supporters.