I guess the question is - if you can't get LTT, do you want to stay in the park to eat or are you willing to go elsewhere? There is nothing inside MK that will mimic the offerings at LTT. If you are willing to leave the park, I would consider going to either Whispering Canyon at WL or Trail's End at Ft. W. Both are accessible by boat from MK. Trail's End offers a buffet - pork ribs, fried chicken, etc. - and typically adds some holiday fare on Christmas day. Last year WCC had a family-style offering of turkey, ham, holiday fixings, etc. and would probably most mimic the food and family-style offerings of LTT. Both resorts are also beautifully decorated for the holidays, with WL being the most beautiful of all the WDW resorts, IMHO.