SE has made a great game in FFXIV: ARR. SE has made some silly oversights in regard to the popularity of their great game in the handling of the stuff that leads up to playing said great game.
I used to get all crazy about being the first to enter registration and log in, but I've since learned that everything will work out at its proper time. If my EA code gets registered within 30 seconds of them opening the site, or with 30 seconds to go before EA starts, I'm really not missing anything.
This is what I think will happen if they can't figure out this EA registration. They will let everyone in from Open Beta participate in EA. This will cause an uproar, but it's the only fair way to handle it.