No member of the board shall receive any salary or other compensation, but each member shall receive an amount not to exceed the amount specified in RCW 43.03.230 for actual attendance on or traveling to and from meetings of the board or on special assignment for the board, together with subsistence and traveling expenses incurred in carrying out the duties of the board in accordance with RCW 43.03.050 and 43.03.060: Provided, That the board may adopt by resolution provisions for reimbursement of actual travel expenses incurred by members and employees of the board in carrying out the provisions of this marketing order pursuant to RCW 15.65.270.