Thanks, sdsearch. Unfortunately, there are no travel related redemptions available for the Rewards Plus anymore other than Marriott gift cards.

I ended up calling Chase CS and they said that these are not part of the UR network. He couldn't guarantee they would transfer but he made a special request to the marketing department (??) and would call me back about it next week. How I wish my husband was interested in miles and points, we could have avoided all this.