Here is some interesting information about Worldmark, RCI and II. Worldmark contracts, with RCI as their exchange company, allow their owners a simple place to exchange their Worldmark credits for a week at a Worldmark Timeshare Resort. This is actually a great deal!
But, before Trendwest sold to Wyndham, they were very anxious to complete their contract with RCI and sign a contract with II. (Interval International, IntervalWorld.com) II does exactly the same thing that RCI does and reportedly was a split off from RCI. Why did Worldmark want to make the switch? They said that RCI had 4,200 resorts from which to choose, but for many of them, no one would really appreciate staying in them. II had just 2,900 resorts but they were considered to be among the best in the world. At one time, RCI and II were the only choices for making an exchange. Today there are several exchange companies worth exploring. You can find these companies with a simple internet search.
Why did Worldmark return to RCI? Because the umbrella company that owns Wyndham also owns RCI! Lots of current Worldmark timeshare owners have called me after sitting down to listen to a Worldmark update/sales pitch. They have been told that without Travel Share they cannot use RCI! Not true. I always tell them that I am sure II will be happy to help them if they ever got turned down by RCI. RCI Points® Assistance: 1 (317) 805-9941.