When I did my last set of ADRs, my cc was set to expire before my 180 days was done. I updated my MDE as soon as I rec'd my new card. For me the cc number was the same, but the exp. date and the 3 digit code on the back changed.Thanks for your help - I definitely did not do it intentionally and will show for all my reservations but glad to hear they aren't going to cancel them all!