Access to trademarks: Thematic organisations sign a trademark agreement that allows non-commercial use of all Wikimedia trademarks.
Access to fundraising: Thematic organisations may use Wikimedia trademarks for fundraising, and may have access to additional fundraising opportunities (such as payment processing for the annual Wikimedia Foundation fundraiser).
Additional representation: Thematic organisations may send two (or more, in the case of thematic organisations with paid staff) representatives to the annual Wikimedia Conference.