I don't know if anything "extra" is going on for the 6th, but on the 9th, high school cheerleaders may be in the park. We were in Magic Kingdom on the exact same day last year and it was SO, SO crowded (it was Thursday, Feb. 10, 2022). We rode 4 rides the whole time, but park hopped around 5:00, so it may have gotten better that evening.