#1 Call disney dining and ask them to go over your dining itinerary - they are able to access your records with a phone number or name.
#2 Wait till you check in and have the front desk print you out a complete list of reservations.
I did both on my last trip and the CM's were happy to help. I even had them look up confirmation numbers I misplaced but had time and place written down so it is easliy accessible for them.