Please forgive my ignorance, very new here. My wife(Silver elite) and I are cruising FLL - Barcelona and flying back from Paris. Used points for coach flight. I know that we cannot upgrade the seats but we have the points and I wondered if there might be a chance if we had the certs in hand and checked in very early? Worst case would be the $35 each for the redeposit right?

ITN shows 5 Z available in the flight.

Thanks!!