What is a Grand Prix? I thought you changed the name to MagicFest?
This was part of the reason a name change was made, so we could better distinguish the aspects of the weekend. The 'Main Event' has always been the actual Grand Prix, it just gradually extended to cover the entire weekend. Now it simply means the main event.
Grand Prix = Main Event
MagicFest = Entire Magic Weekend
So if you see a reference to a GP on here, the website, etc. it refers specifically to the 2-day primary.