Haw. Code R. § 11-201-23
Although in the usual course of disposition of a petition for a declaratory ruling no formal hearing shall be granted to the petitioner or to a party in interest, the council may order the proceeding set down for hearing. Any petitioner or party in interest who desires a hearing on a petition for a declaratory ruling shall set forth in detail in the request the reasons, together with supporting affidavits or other written evidence and briefs or memoranda of legal authorities, why the matters alleged in the petition will not permit the fair and expeditious disposition of the petition. To the extent that the request for a hearing is dependent upon factual assertion, the request shall be accompanied by affidavits establishing these facts. In the event a hearing is ordered by the council, chapter 91, Hawaii Revised Statutes, shall govern the proceedings.
Haw. Code R. § 11-201-23