While an all-US meet up is as unlikely as two blue elephants giving birth to a striped watermelon, there is nothing to prevent those in smaller regions to meet up if they so desired.
I am sure that there are plenty of EoFFers within a hundred miles of each other, but to know of a close one that you like is completely different.
For the sake of being more awesome than most, I would show up for a meet up in my area, provided enough time was given so I could notify my workplace and budget for the trip.