A fun idea! But, wouldn't that be an awful lot of people? Right now, 36 Norwegians have registered. Of course, not everyone may want / be able to join. I'd probably try to attend something like this if I attend EF this year!
Could also be possible with a larger room party for all Scandinavians, if anyone felt like arranging that. Would be slightly more informal and relaxed, but the room could end up getting pretty cramped. (Unless someone has a suite.)