Yes you are able to do this and still get the bonus 1000 RZ points.
BUT only the store you preorder at will have a reserved copy for you.
I'll give two instances from a previous title:
1) you preorder the regular edition of Black Ops 2 at store A. Store B has a hardened edition so you go there and pick it up while exchanging your preorder slip for the regular edition from store A
2) You preorder the hardened edition at store A. Store B has a midnight release while store A doesn't. ONLY store A will have a hardened edition reserved specifically for you. You may be able to find extra HE at store B and purchase it there and still qualify for the 1000 RZ points.
Basically to qualify for the 1000 RZ points you need to preorder any edition of the game and then buy any edition of the game within 7 days of release at any store. You also need to exchange your preorder at the time of purchase.
Doing the above qualifies you.
Thank you. This is what I thought. I just didn't know if my BLOPs2 experience was an anomaly. Probably grab Far Cry3 Monday after release.