Here’s a description that you might find helpful.
From Page 8 of II’s 2020 Buyer’s Guide (attached in post #4)
13. The Exchange Program is based upon the “Comparable Exchange” concept. Comparable Exchange attempts to parallel, to the greatest extent possible, the supply of and demand for the vacation period relinquished to the Exchange Program with the supply of and demand for the vacation period being requested in exchange. Comparable Exchange also attempts to ensure that Members are confirmed, whenever possible, to resorts that are comparable in quality to the Home Resort.
14. II, therefore, in order to achieve its goal of providing the Member with an exchange experience comparable to that which the Home Resort provides, assigns a priority to each request based on the following factors:
(a) The supply of and demand for, within the Exchange Program, the vacation period deposited (Deposit First) or being offered in exchange (Request First), and the Home Resort.
(b) The supply of and demand for, within the Exchange Program, the vacation period and Member Resort being requested
in exchange.
(c) The quality, facilities, and overall experience offered by the Home Resort as compared to the quality, facilities, and overall experience of the Member Resort being requested in exchange. This is based on evaluation forms received from exchange guests to the Home Resort, resort inspections and evaluations, and other information received by II regarding the Home Resort.
(d) When the exchange request is received by II. The earlier of two identical requests for the same vacation period with identical relinquishment will receive priority.
(e) The amount of time in advance of the first date of occupancy that the Home Resort vacation period is relinquished to II.
(f) The unit type and private sleeping capacity being relinquished as compared to the unit type and private sleeping capacity being requested. The priority established for exchange requests is based on the number of persons that the deposited or to-be- relinquished Home Resort unit will accommodate privately. The number of persons accommodated privately is generally determined on the basis of two people per private sleeping area having access to a bathroom. Such bathroom access must not interfere with the privacy of the people who occupy the unit’s other private sleeping areas.
All of the above factors, with the exceptions of when the Home Resort accommodations are relinquished, when a request is received, and the unit type and private sleeping capacity, are constantly changing and are updated by II on an ongoing basis.
Not all of the factors described above are applicable to points-based exchanges (or, alternatively, have already been taken into account in the development of the Club Interval Weekly Points Values and Collection Points Weekly Values charts).
15. In addition to the above, priority in the exchange confirmation process may be provided to:
(a) Members requesting an exchange to selected Member Resorts that are owned, or in certain instances branded, marketed, and/or managed in common with the Home Resort, and
(b) Members who own a Vacation Interest at a Member Resort located in the geographic regions of Australia, New Zealand, and/or South Africa, and are requesting an exchange to other Member Resorts that are located in the same geographic region as the Member’s Home Resort.
