RE: Wifi event question
You're not necessarily mistaken, but there's a good chance American games will be able to receive the European events. It happened with Jirachi, and it apparently happened with Pickachu-colored Pichu. I'm pretty sure it has to do with the merger between PUSA and Pokemon U.K. They probably use the same technology in their games and events, so the two would almost be identical.
As for the OP, I'm not quite sure what the question is, but European games should be able to receive the event anywhere in the world (provided the connections aren't blocked by the ISP), and games in Europe will be able to receive the event as long as they're European or North American.