Stacyjoy75. We have done Christmas thru New Years in the Fort for 2 out last 3 years now so think I have some experience. Depending on how much you intend to decorate you may want to consider sending your decorations down in advance. The Fort charges a handling fee of $5 per package.
Be fore warned DISNEY has an extremely strict policy against riding around in a Decorated Golf Cart. If caught you will be directed to report to the Bike Barn and register for the RIDE OF SHAME and then on Christmas Eve at approx 4pm report to the Hitch/Unhitch area and be part of the procession of rulebreakers traveling down to the Settlement Transportation area and then the Dog Park while being subject to public scorn and ridicule. I am not sure if our dogs make sure I get caught because they love the attention everyone pays them or the treat the Ranger gives them. It could be Just that is their revenge for us putting them in some silly costume and being in the Pet Parade Earlier in the afternoon.
As for dining options. One of our Party has a Christmas Eve Birthday so we try for a Late Breakfast or Early Lunch at Whispering Canyon in Wilderness Lodge. We have been Lucky enough to once been serenaded with HAPPY BIRTHDAY by HoneyBee . It still brings a tear to my eyes ( And make a note to pack my ear plugs) when I think about it. If we don't do up some tube steaks on the grill at our site we tend to opt for Trails End. Christmas Day we have done Trails End and Yes they offer a traditional Christmas dinner Fare. We prefer to go back to Whispering Canyon for dinner on Christmas again a Traditional style meal .