To see all of the fares available on WN goto www.iflyswa.com and go to the reservations screen. You will see the multiple fares available on the flights. It is actually very easy. Also, pay attention to the "enroll now" button on the confirmation when you purchase tickets. This allows you to get a free Rapid Rewards card without filling up that brochure with stamps.
With those numbered Boarding cards you will be sitting in the middle if your # is over 60.