Just Christmas day. Hmmmm...."worth it" I'm assuming you are going the week between Christmas and New Years? I think that you will want a break from the parks, then again, you run a small chance of the park closing to capacity. It's going to be REALLY crowded and I personally couldn't stand to be in the parks all day with crowds like that but then again, I can't do a whole day in the parks in the middle of Sept when it's the least crowded. I would allow at least an hour just in transportation time, then another hour and half to eat, so is leaving the parks for 3 hours, worth it for you? The food is good, not great and its very loud, not a relaxing meal by any means.