Day 14: How the characters play off each other in 9 and interact with their environment. Zidane, the first FF party leader with actual leadership skills, able to manage his party of fragile personalities in stressful situations (except the unstoppable force of nature that is Quina.) And how their personalities are baked into the combat and environment, and storytelling, like Vivi cooking and burning paths, Steiners magic sword after he befriend's Vivi, everybody except Amarant has their combat style reflect their personality and interactions
Day 15: I'm having trouble coming up with much, but maybe the Alexandrian military dress code.