The original floorplan for those suites only showed the ocean side balcony as being included with the family suites. The accessible cabins always showed a rectangular balcony, tucked into the corner.
The NCL deck plans are all updated now and it looks like most of those family suites and accessible balconies have gained balcony space, some more than others.
https://www.ncl.com/cruise-ship/prima/deck-plans