N.C. Gen. Stat. § 1-569.4

(1) Except as otherwise provided in subsections (b) and (c) of this section, a party to an agreement to arbitrate or to an arbitration proceeding may waive, or the parties may vary the effect of, the requirements of this Article to the extent provided by law.

(2) Before a controversy arises that is subject to an agreement to arbitrate, a party to the agreement may not: Waive or agree to vary the effect of the requirements of G.S. 1-569.5(a), 1-569.6(a), 1-569.8, 1-569.17(a), 1-569.17(b), 1-569.26, or 1-569.28;

(3) Agree to unreasonably restrict the right under G.S. 1-569.9 to notice of the initiation of an arbitration proceeding;

(4) Agree to unreasonably restrict the right under G.S. 1-569.12 to disclosure of any facts by a neutral arbitrator; or

(5) Waive the right under G.S. 1-569.16 of a party to an agreement to arbitrate to be represented by an attorney at any proceeding or hearing under this Article, but an employer and a labor organization may waive the right to representation by a lawyer in a labor arbitration.

(6) A party to an agreement to arbitrate or to an arbitration proceeding may not waive, or the parties shall not vary the effect of, the requirements of this section or G.S. 1-569.3(a), 1-569.7, 1-569.14, 1-569.18, 1-569.20(d), 1-569.20(e), 1-569.22, 1-569.23, 1-569.24, 1-569.25(a), 1-569.25(b), 1-569.29, 1-569.30, 1-569.31. Any waiver contrary to this section shall not be effective but shall not have the effect of voiding the agreement to arbitrate.