Welcome to planDisney, Christina!
How exciting that you've got reservations for
Space 220. Get ready to blast off to infinity and beyond! I just know your son is going to love it. It's such a unique experience. I was fortunate enough to eat at Space 220 back in May. The food was delicious! The Blue Moon Cauliflower appetizer was very impressive. I really enjoyed my 8oz Filet Mignon, but the Slow Rotation Short Rib looked and smelled divine too! Either way, you're in for a treat.
Christina, unfortunately, you cannot order a
Mickey Mouse Celebration Cake to Space 220. There are many other
participating restaurants, however, Space 220 isn't one of them. I'm sorry if that's disappointing. However, let me assure you that the desserts at Space 220 are out-of-this-world. The Chocolate Cheesecake in particular is heavenly. You should also let your server know that you're celebrating your son's birthday.
If enjoying a special birthday cake is an absolute must, check out
Amorette's Patisserie at Disney Springs. You can pre-order some pretty amazing specialty cakes, which you can pick up and enjoy back in your hotel room.
I hope that's helpful, Christina. Thanks for stopping by planDisney.
Mike