This is really a weird system. The point of doing a lottery is (partly) to prevent people from lining up too early. Now people will line-up early anyways since it will determine whether or not they will have a good spot, inside or outside the egg/ellipse. Even then, some people will show up at the very last minute and still get in the ellipse because they will have a lucky number.
If you're going to do a lottery, why not do it the simple way? Like, every one is given a wristband or number, then one number is picked up later in the afternoon, and it becomes the first number. Then everyone can go in order and choose to go in the ellipse or not if there are in the first 400.
This system seems to be the most complicated they could think of, and not necessarily fair...
That being said, whatever system they have I'm still pumped about having GA tickets!
It's going to be awesome no matter what.
(but I'm quite happy I won't see the show until much later and things will have settled down hopefully...)