Wirelessly posted (BlackBerry: BlackBerry8530/5.0.0.1030 Profile/MIDP-2.1 Configuration/CLDC-1.1 VendorID/417)

" Even if your dates change, as long as your origin and destination do not (and assuming there is Saver space), there is no change fee."

But that's the problem, isn't it? The OP will be looking for two TATL SAAver seats in J during the peak travel time for TATL travel. So booking a J SAAver award now for dates (or destinations) that might not work down the road is risky.