Anyway, long story short, I followed the link to Best Buy that was posted on the Bioware forum and ordered.
And ended up with a plain old Dragon Age II. Which is fine, as far as it goes. Certainly, that's what Best Buy 'knew' I was ordering. Seems they had a different link for the SE. :p
BUT, I used the EA Support site, explained my situation (politely) and attached the email I got from Best Buy when I ordered. This morning, I had an email with a code that gave me access to the promo items, including the Exiled Prince DLC.
And I am a happy little consumer again.
By the way: LOVING THE GAME. And I have only gotten through the first act so far.