<font face="Verdana, Arial, Helvetica, sans-serif" size="2">Originally posted by xyzzy:
You can do Idine with more than one airline (different cards). You can also switch card to different airlines and back.</font>
Actually, you can't switch your ONLY card to a different airline. If you have two or more cards in a given airline's iDine program, you can leave just one of them there and switch all the others.
If you have a credit card you never use and never even plan to use, you can add that to the iDine program you want to remove the "only" card from, then remove the formerly "only" card, and add it at another program. But you always have to have at least one more card than the number of different iDine programs you're in to be able to move cards between those different iDine programs.