According to CardTrak, new travel benefits have been added to the Worldperks Visa:

The [Worldperks Visa] now includes free membership into the “Hideaways Aficionado Club.” The “Club” offers exclusive access to an eclectic portfolio of the world’s top hotels, intimate resorts, city-center oases, luxury cruises, and special tours. Partners in the portfolio offer “Club” members preferred rates, room upgrades, and complimentary welcome amenities and services such as free snorkeling, spa treatments, or beachfront dining. For example, when “Club” members stay at the Windjammer in St. Lucia, they not only get the best rates guaranteed, they also get a sunset cruise at no additional charge, plus early check-in and late check-out.

While I couldn’t find further details about this benefit on NWA’s web site, a search found what appears to be the “Hideaways Aficionado Club” web site at http://www.hideaways.com. It shows the cost of one year of standard membership to be $135, so take that for what it’s worth.