Your answer is here:
Which plane? It touches on which planes have the AVOD system, but the AVOD system = 737-800 version B with better seats and pitch in Clase Ejecutivo. That is mostly used for longer flights, but one never knows, many flyers report swaps.
No "pods" on CM currently. Those are only on the grounded 737 Max, all 6 of which are stoically parked on the new Terminal 2 ramp at PTY.