We went last year the 18th until the 23rd. It was busier than in 2003, but not too bad. Of course we usually have to go in the summer. In 2003 it didn't get crowded until the 25th. The UG has the numbers for the time this year at a 10 on the 25th and 5's and 6's for the earlier part of the week. Hope the Guide is right. We are going the 17th to 27th, but staying out of the parks from the 25th to 27th. You picked a good week, especially since your other week was Christmas week.