Come prepared with line activities: To keep your kids from getting bored (and yourself from going nuts), figure out activities to keep them entertained in long lines.
Set up FastPasses on the first available date: If you purchase your family's Disney World tickets in advance, you can begin making FastPass reservations 30 days before your visit. Walt Disney World hotel packages also entitle visitors to an additional 30 days of FastPass fun, so you could log on 60 days in advance to make reservations! Don't worry — you can always change them later.
Know where the park's baby care centers are located: If you've got an infant or diaper-clad toddler in tow, be sure to use Disney's map of baby care centers. These comfortable, quiet spaces are great for nursing, changing, and soothing little ones!