The commission may, but shall not be required to, conduct a hearing on a petition for declaratory order. Any petitioner or party in interest who desires a hearing on a petition for a declaratory order shall set forth in detail in the request the reasons why the matters alleged in the petition, together with supporting affidavits or other written briefs or memoranda of legal authorities, will not permit the fair and expeditious disposition of the petition, and to the extent that the request for a hearing is dependent upon factual assertion, shall accompany the request by affidavit establishing those facts.
Haw. Code R. § 15-15-103