RCI and
Interval International(II) are the two major exchange companies and nearly every Resort or Developer is affiliated to either one or the other and in rare cases both. These companies do not sell timeshare or vacation properties, but enable a timeshare owner to trade or exchange their week(s)/points at the resort they own and select another resort for their vacation. There is usually an annual fee to belong to an exchange company like
RCI or
II and it is separate than the ownership of the timeshare itself.
To the best of my knowledge
RCI and
II remain neutral when it comes to recommending a resale or rental company.