wondering which would be the
 best day to attend
 Will you be there for the entire three days? 
Yes indeed.
  I know it won't be on the scale of the ZKM LAD
conference with
 lectures and webcams 
It's a very different kind of event. The organisers claim there were
6000 visitors last year, and they are hoping for 8000 this time.
These people are audio specialists but they don't necessarily know
anything about Linux - if they have heard about it, they probably
haven't actually seen it. There hasn't been any Linux or other libre
software there before, as far as I know.
  I'd really like to come and see some
 Penguin audio in the flesh, and maybe get some hints and Agnula 1.1
 CDROMs (if they are available). 
Damien Cirotteau is scheduled to be there to represent the Agnula
project.
Cheers
Daniel