So now we know that: The king is in his audience chamber, the king is holding a war council, which of his advisors are present, that all of them are following proper protocol, and which of them are armed and how heavily.You complete the scrying ritual. You can see the king in his audience chamber, ready for his council of war with his chief advisors. You can see the advisors respectfully walking towards the king. They bow, address him with the normal honorifics and... ka-ching! The view goes blank.
What's the chances of hitting a useful 30 seconds of the targets day with the scry spell? Pretty much nil, I would have thought.
Given that we used Observe Creature rather than View Location or View Object, we've at least learned something(the king's location, which of his kingly accoutrements he's got).
We may not know what his battle plans are, but if we start up a View Object right away, we'll probably see the maps before they finish rolling them up for storage.