I should meet you before if you want (5pm or so), after and take you to beer blast really, shouldn't I? Actually, I can meet you earlier as I am meant to have an awesome class at 3pm but it is the (optional) midterm, which I am optionally not taking part in.
As for the essay 3 - the way I see it, this is the way you actually make a load of normal business school stuff turn into a real person. WSOP final table should absolutely find a way into that (the World MBA poker thing wouldn't be Stern specific, and when we went we did it off our own back, so isn't their thing really and not right for essay 2, in my mind).
Essay 3 is deliberately a blank canvas for you to take where you will. I think it is best used to make the whole application pull together and cover things not mentioned elsewhere (typically - making it clear you aren't a really dull overachieving student and career person but actually - loh! - have a life). My 2c.