Originally Posted by ArtM

Without exception, all Marriott exchanges are handled through an exchange company. Probably 95% go thru Interval International. Almost all the rest go thru RCI, although a smattering do go thru the independents such as San Francisco.

So-called internal exchanges do go thru II; the exchange fee is reduced to $89 as long as the requested exchange only includes other Marriott resorts. Deposits on Marriott weeks in II are restricted in availability to only other Marriott owners for the first 24 days after the deposit is made. Membership in II costs around $79 per year and one must be a member both at the time the request is made and at the check-in date for the week that is obtained as an exchange.

The one slight alternative to avoiding external exchange companies is for resorts in the "Florida Club." Owners at these resorts can reserve time at one of the other resorts in the club, but only starting six months before the check in date. Since owners can reserve a year, or even 13 months in advance, the chances of obtaining a week during a prime season are very limited for non-owners .

As the other response indicated, TUG is the best source of information on the MVCI resorts.

Art