I would expect it to be busy. Its right in the middle of the peak spring break/ Easter season. I would plan to be at the parks early, use fast pass as much as possible, take a break in the afternoon when the park is fullest (also a good time to shop- dont wait until evening to shop- that is what most people do and the stores are packed), eat at off times (if the lines look light and you know you will want to eat in the next hour just do it at that time- its not going to get better!). If a show is important to you, plan on getting there early to get a good spot.