Everyone is spot on. We played 12u in fall ball and in a 12u tournament the first week of july. At 10u we are lucky to get 5 innings in pool play due to many big offensive innings. At 12u, every game we played in that tournament went all 7 innings. The speed of the game and dominate catching really limits extended innings. I have a good hitting team, but we seem to make better contact on 12u pitching. The extra distance and a bigger ball seem to add a little confidence. Definitely more slappers, and off speed pitching to get used to. Not a lot of slow change ups like at 10u, more off speed, harder to sit down on and drive, easier to get you on your front foot.