Hi Cathy,
Thanks for visiting the Disney Parks Moms Panel!
First, I would like to be sure that you know that you are traveling at a crowded time of year. I am not sure of the exact week that you mean by Spring Break; however, dates when most schools have Spring Break are typically quite crowded. With a couple of strategies, you can have a great time even on the busiest day of the year at the the Disney theme parks. My family and I go to Walt Disney World nearly every year during our daughter's Spring Break. We arrive at the theme parks as early as we can each day, even 30 minutes ahead of the official opening if possible. Take advantage of the Extra Magic Hours offered to Walt Disney World Resort guests. These will allow you to enter a theme park early or to stay late. Sometimes, during Spring Break, Extra Magic Hours at the Magic Kingdom can start as early as 7:00 a.m.!
My next suggestion for you will help both with Spring Break crowds and the fact that you have children who are interested in different activities. I suggest that you have each child make
customized Disney theme park maps. Ask each child to pick two or three attractions at each theme park that they really want to do and put it on their map, which will be mailed to you. When you go to the park, do the attractions on the maps first. That way, you can be sure that everyone gets to do something that they wanted.
Finally, I am not sure how many adults you will have in your traveling party, but consider splitting up for part of the day. You can send one adult with your son and one with your daughter for the morning, and then all come together for lunch and the rest of the day. This way, each child can have some time to do exactly what they want without the other sibling being unhappy.
I am limited in the amount of space that I have to answer, Cathy. Please do write back if you have any further questions!