The airline program is the same as the iDine program, even if you did not know this.

For example, I just switched my iDine account from Delta to CO in order to top off my CO account. The rep on the phone said you can't have the same credit card in both programs, so he had to close my DL account. I only thought I had one, but he said my DL Dine account set up through Delta was also an iDine account.

Rep said that the restaurants for the various airlines are basically the same, with a few exceptions here and there.