Welcome to planDisney, Catherine!
Walt Disney World is such a magical place for people of all ages,
including toddlers. I have a couple of young kiddos myself and there's nothing like bringing them to The Most Magical Place on Earth. They absolutely love
"it's a small world" at
Magic Kingdom Park! It's the perfect attraction for little ones.
Catherine, I can tell you that every person in your party must be included when you make your reservation. The Cast Members need to make sure that you have a table that is big enough to accommodate everyone in your group. However, you'll be pleased to know that Mouseketeers under the age of three will not be charged. You can ask a Cast Member for some high chairs and your little ones will be able to enjoy the experience with you.
I have a similar situation with an upcoming trip. I'm traveling to Disneyland (for the first time!) with my extended family. We have made some dining reservations for 10 people and I've had to include kids under 3 on the reservations. So I'm glad to share my experience with you, Catherine!
I hope you have a magical trip! See ya real soon.
Mike