We were there the week after that earlier this year.
It was busy/crowded. Seems like it was worse than Thanksgiving week of this year. It could have been that it was spring break for a lot of the kids. Or it could be that we were trying to squeeze everything into a short amount of time and didn't go to DCA during the middle of the day like we did this year.
I don't know that it really matters, though, if you do what everyone here says to do - be at the park when it opens, gather up fast passes, head to DCA during the middle part of the day, then head back to DL in the evening.