I was able to use my PS3 pre-order code from Amazon yesterday night (earlier in the day I kept getting Error 3). Everything worked great, downloaded the client, updated it, and I'm just currently waiting til Saturday.

I got an email for the EA code today, even though I registered for it yesterday and finished everything. So for those out there that haven't got an email confirmation I'm just assuming SE is experiencing tons of traffic and everything is just taking a bit longer than usual.