Hi, Jennifer!
Mickey is a very trusting Mouse, and he will take your word that your little one is under the age of 3 when entering the gates of any theme park. No need to bring along any proof of age or identification for your child. Kids under 3 will not require a
theme park ticket. There is child ticket pricing for kids age 3-9, then any guest age 10 or older requires an adult priced ticket.
When
dining at any location, your child under the age of 3 can share off your plate for no extra charge. If you choose to order a kids meal, this will be at regular menu price. I found sharing with my kids was fine at buffets or family style dining locations, but I usually ordered them kids meals at most Table Service and Quick Service locations so they could enjoy their own drinks and have "kid" food (chicken nuggets were a must when my kids were 2!)
With a little one in your travel party, you will want to plan on a
stroller. Feel free to bring a stroller from home, or rentals are available in each of the theme parks. Make sure to mark your stroller with a ribbon or balloon so you can find it easily in the stroller parking areas.
Wishing you a magical visit to Walt Disney World!
Cathy