Welcome to planDisney, Natalie!
How exciting that you've secured an out-of-this-world dining reservation for
Space 220. I was finally able to eat at this restaurant back in May. I really enjoyed it and the food was delicious. I'm someone who can eat A LOT of food (I still remember my
planDisney friends laughing at me as I devoured food on our training trip) and I was absolutely stuffed at the end of this meal. I'm sure your kiddos will be so mesmerized by looking out the window and watching all the activity in outer space.
You'll be pleased to know that children under the age of three are considered Guests of Mickey. Therefore, not only can they enter the theme parks for free, but they can even eat for free at select Walt Disney World Resort Restaurants. At restaurants that serve buffet or family-style, they can dine on a complimentary basis with their parents. At restaurants that serve food a la carte (i.e. from the menu), little Mouseketeers are welcome to eat from the plate of their parents. If for whatever reason you'd prefer your child to have their own meal, you're of course welcome to pay for one off the menu.
Natalie, since you'll be in EPCOT, you should "totally" check out
Turtle Talk with Crush, which is located in World Nature. My own little kids adore this show. They find it so funny and entertaining.
I hope that's helpful, Natalie! Have a wonderful time at The Most Magical Place on Earth.
Mike