From an Origin advisor;
Deepak
Amanda, I checked our database and found that Barnacle Bay has not yet been available for the customers and its a reported concern. Please be assured that as soon as Barnacle Bay is available, you'll receive the same. Thanks for your cooperation shown so far.
I mentioned that I knew a lot of people have already received their codes. I asked if there was a reason some did and some did not?
Deepak
There are possible chances that issue is being resolved and you'll also receive the same soon.
Sooo, I will be watching my email.. :/