I was a bit disappointed with the ball. I played through again from ch2 turning down Alyssa and the dance crew to see how Devilla would help you sneak in and it seems like that wasn't actually implemented at all. Instead you just barge in falling Bruce's advice then the rest of the events proceeds like normal.
I will say the Julia bedroom scene was hilarious and I wish the other girls had more fleshed out scenarios.
All in all I feel this was on of the weaker chapters despite having some great sex scenes. I just feel the choices we made didn't really effect much.