It could be cool, but right now I'm on my way to Comiket (second time this year), and it have left me with a big hole in my wallet.
Just to be sure - it is this con you are talking about?
Haarlem is not that far away from where I live (600-700 km), but it is to early in the year for me to take my motorcycle
on a trip.
Maybe I go - I will have a little talk with my Dutch friend at work, before I decide.