Amazing stuff - It is really cool to see a European Kong Off being organised! I'm sure it will be a lot of fun - I am visiting Copenhagen in a few weeks time to go and visit some friends and some places of interest from when I lived over in Denmark. I can't remember if there are any classic arcades in the city, do you know of any places? Would be interested to visit them if so.
I am on holiday in Japan in June, otherwise I'd try and make it across, maybe next time