Don't schedule FastPasses for earlier than 2 p.m.:When you're scheduling your passes ahead of time, be sure to schedule them for after 2 p.m. The morning lines are far shorter, so scheduling during peak hours will save you lots of time.
Bring a stroller with a storage compartment: To avoid your kids crashing midday due to all the walking, make sure that you bring a stroller. The storage areas will be good for you, too!
Make a must-see plan ahead of time: Attempting to see everything in a single day will just result in disappointment, so figure out which experiences your kids have to have during your day at the park. Create a game plan for seeing these things, and then work on everything else.