Can I use RCI without owning a timeshare?

I'm curious about the possibilities of using RCI, the renowned vacation exchange program, without actually owning a timeshare. Is it feasible to participate in RCI's services and access their global network of resorts and vacation properties without being a timeshare owner? I've heard of various vacation clubs and membership programs, but I'm particularly interested in understanding the specifics of RCI's offering in this regard. Could you please elaborate on the options available for non-timeshare owners to utilize RCI's platform and the potential benefits or limitations that come with such arrangements?