we went 2009 and 2010 in september, last week into oct. 2009 was amazing weather! shorts and tshirts (sweatshirt in the morning/evenings) 2010 weather not so amazing sweatshirt most of day and a little rainy.
crowd wise 2009 everything was walk-on 2010 a bit busier
overall a great time to go though and we would def go back then, having a baby in may but im hoping for a late sept trip this year