Just a thought, but I couldn't help but notice that there was a lot of spare time between when the divisions finished playing and the start of Einstein. It would be a good idea to have 6 bots from the divisions, that did not make it to Einstein, play a few rounds just to test the field systems? You could have a raffle to see which teams make it to the pre-Einstein "just for fun" event, this way the people in the stands have something to watch (although the paper airplanes were a good distraction
), and also if the field does have any issues you would be able to catch them before the first matches start. And you can just use leftover basketballs (or some other game piece for next year) from the divisions, so Einstein has a fresh field still.