The crowd levels will be down but don't think that it'll be deserted. you'll still need to rush to TSM and Soarin as soon as you enter the park for your FP's, they will still run out by mid day. Also, at some of the TS restaurants u may be available to walk-up and get seated. I would try it on anything as popular as LeCellier by any means, but there are some good options to choose from. The resort pools are heated so still bring your bathing suit and definitely bring a light jacket for night time fireworks. While nice and comfortable during the day, it will get chilly when the sun goes down.