I have viewed countless posting on threads referencing incentives/rebates. Likewise I have asked questions myself or responded to some posts regarding same.
What I remember from buying autos over the years is that after all is said and done dealing with the salesman/dealer, you go to their finance department to finish and sign all paperwork. If I remember correctly, you are asked to sign a statement that " you waive all incentive/rebates" or something to that affect.
If this is still the process when I pick up my EX, and if they do not honor the $1,000 rebate/incentive, I will not, I rpeat I will not sign the document. I suspect if you sign, then then dealer is the beneficiary of stated rebates/incentives! Just how I will handle if I run into the issue!