Factual error: In the intro before the title, the bridge of the Cayuga is shown, intercut with photos of another ship supposedly about to run into her. We see the starboard side of a vessel and later a blurry long-shot of a ship approaching. In both shots, the running lights are the wrong way around. The starboard light should be green and the port light red but the first shot shows the starboard light as red and both left and right wrong in the shot of the oncoming ship. (00:00:52 - 00:01:50)
Factual error: In the whole episode, Romania is depicted as a monarchy with the king in a position that allows him to make political decisions. However, Romania ceased to be a monarchy in 1947. By the time depicted in the episode (circa 1997), Romania was a republic and its head of state was the president. Members of the ex-royal family did not hold any positions in the Romanian government and were certainly not authorized to represent Romania in international events.
Answer: Officially, the individual has been ordered to attend, failing to could be interpreted as either, Failure to follow orders, dereliction of duty, going AWOL, or even desertion. It would depend on the underlying reason as to why the person doesn't appear.