N.C. Gen. Stat. § 66-244: Limitation on duration of contract term.

A membership camping contract shall clearly state the duration of the contract. A contract shall either have a duration of no more than 30 years or give the purchaser the right to cancel the contract at any time after 30 years without further obligation and without a refund of any of the contract cost. (1991 (Reg. Sess., 1992), c. 1009, s. 4.)