I'm not sure this will help. But I booked CRT with the dining plan and used my CC to hold my spot. I noticed the CC was going to expire before the date, so I called last night to "refresh" the CC expiration date on my reservation. The reservations lady said they could not change credit card info on an existing ADR. She said since I was on the DDP just leave it and it won't be charged unless I don't show up (which, if I don't show up, not sure it would be charged since it is not correct). So they probably can't delete the charge off your existing reservation. You might need to change the ADR to do that. I would call so you can rest easy on it and take any needed action. Good luck!