Originally Posted by
javabytes
They are not guaranteed, but they certainly are advertised by the icons when choosing flights.
^ +1 - I certainly choose my flights based on those icons, it is being advertised, and I would expect that type of aircraft (although equip swaps do happen). Especially since the OP mentioned that even day of, the website was still showing the aircraft to have lie-flats. I agree that no cash will be given, but would expect some RDM's in this situation.