I am not a member, but stay at some of their resorts free with my ROD membership. I have stayed at Mountain Lakes in Alabama and like it. It was on the Tennessee River. The resort really catered to boaters, fishermen and week-enders. I have stayed at Abita Springs. Other than location, I was not overly impressed with the CG.
OCP memberships are expensive depending on how much you are going to use it. If you are interested in staying at their resorts, you could do better by buying a membership in a less expensive resort that offered ROD. Then stay a OCP for free.