The decision of the Motor Vehicle Review Board on any matter heard under Section 29 of this Act shall be in writing and shall contain findings of fact and a determination of the issues presented. A copy of the Board’s order shall be served upon all parties to the action by the Board, either personally or by certified mail. All expenses incurred by the Board in conducting the hearing shall be paid by the parties to the hearing and shall be divided between or among them equally, except as otherwise provided in Section 13 of this Act.