A little update on my missing Rakuten cash back from the AT-AT I ordered.
As a courtesy, we are making an exception and adding Cash Back for this order to your account. If the code is not provided by Rakuten (even if it comes directly from Lego) it may void the Cash Back. In this case, Lego denied the Cash Back due to the code applied to the order.
In the future, please make sure to only use coupon codes listed on the store’s Rakuten page. For more information, please see our Help/FAQ page: http://www.rakuten.com/help/exclusions.htm
I'm not sure if the Vintage Camera code set it off or the redemption of VIP for discount. But it appears one or the combination of both will result in denial of Cash Back.