R.I. Gen. Laws § 33-22-5: Waiver of notice.

If all interested parties shall, in writing, waive the notice required by § 33-22-3 and assent to action upon the petition by the court at any time, the court may proceed to hear the cause without publication or further notice and any decree entered in the proceeding shall be of the same force and effect as if notice had been given in the manner provided by this chapter.