Hey there Lisete and welcome to planDisney!
It's funny you should ask about
Steakhouse 71 as I was literally just talking to my friend about it. Kudos to you for locking in that super coveted spot. While I'm sure all of you adults are dreaming of fennel and citrus-crusted salmon, crab cake sliders, and steaks that just melt in your mouth, these littles(who never have any idea what they're missing) only want to eat the same 3 comfort foods from home.
Luckily nowhere in the world has a better grasp on feeding the many palate-having masses than the Walt Disney World Resort. I'd definitely recommend talking with a Cast Member upon arrival at the restaurant to see if they can accommodate the tiniest diners among you. They just might be able to create something for your little ones to enjoy.
Pro-tip: A visit to The Most Magical Place on Earth is the perfect time to try new foods with little ones. I let my goddaughter help me come up with a snack list that would knock your socks off for this year's
EPCOT International Food & Wine Festival. Being able to be part of the planning process definitely went a long way toward getting her excited about trying new things.
Lisete, I'm wishing you much pixie dust on your vacation in a few weeks. If you have any other questions, please don't hesitate to ask me!
Happy planning!
Taylor