We went during a week in October last year that fell on a lot of schools "fall break". We unexpectantly saw huge crowds on our weekdays trip. While we still had a great time, it was because we had early entry every day and left every afternoon and returned in the evening. By about 12 or 1, the park was unbearable, you couldn't walk and it was stressful navigating such crowded spaces with children. I think that feeling of it being overcrowded was compounded by the construction, lack of certain paths that were closed. It's just not fun when it's that crowded.