Emailed them and just got this:
> We just made a little change to the rules:
> "Team represents one country. At least one member of the team must be a citizen of this country."
Looking forward to competing now!
> We just made a little change to the rules:
> "Team represents one country. At least one member of the team must be a citizen of this country."
Looking forward to competing now!
Can a team of 100% Americans compete?
so I would suppose that if you get to the finals (meaning to be in the top two teams of your region), then yes you must all travel to Finland, but expenses paid.
However, the qualifying rounds are organised via Internet, so the vast majority of teams will not need to travel. Of course Helsinki in June is a really nice place to visit if you want to come on your own and check out the finals live ;)