We are going from 12/11 to 12/17. We went from 12/14 to 12/21 in 2003. Traditionally, the Friday before Christmas is when the crowds start rolling in. With Christmas on Sunday, we expect that our week this year will be like the week we went in 2003. The week was great until Friday and Saturday.....we hate crowds.....we love value season because it means low crowds. Friday and Saturday were more crowded than we like, but still you could do stuff, just not as freely. It's important to make a good plan, use all the free park info you can find on the net to plan your park days and make the most of it all. The updated UG has changed their scale and honestly, I think that you can interpret a 4 as about the lowest crowd level that you will ever see outside of the week post 9/11. Don't worry, we will have great trips. Even if we have to wait a couple of extra minutes here and there, I will take even the worst day at Disney over the best day at my job anyday.
Read, Research, Plan, Prepare, and most importantly, in the end, ENJOY!
Maggie