Perhaps some better 'tagging' of each session would improve the selection of wich sessions to go to.
(the current categories, don't hack it)
I found it difficult to make out if a session was going to be a general overview of the subject, or a more indepth technical (handson) experience.
Sometimes I wanted some general idea of a subject I didn't know about, and then it turned out to be a rather theoretical presentation for insiders that already knew what it did.
As a developer that doesn't drink coffee, I'm in desperate need of some good old sugar loaded, unhealthy soft drinks.
I'd even settle for some orange juice, if I could find some.
The only thing, all of this water is good for, is for more visits to the loo!