We went that week last year and it was great!! Not crowded at all. We only had to use fastpass for the most popular rides. Remember to bring clothing for cool weather. The week started out cool when we got there and we ended up going to Typhoon Lagoon on our last day, so you never know.
We were there for our Mardi Gras break, which is the same as Presidents Day this year, so the crowds will probably be even lighter. I think most of Louisiana was there last year judging by the LSU shirts.