Which
travel agent are you using? We have booked for Xmas through Cresta and we had real problems trying to book a meal on Xmas day. They kept telling us that there was "nothing available" and we went round in circles for a couple of weeks until we received an email from Disney confirming that the meals were for sale. It was only then, and after pestering a supervisor that we were able to book the meal we wanted. Try emailing Disney (through DLP official website) to see if the meal is for sale - we found them really helpful.