This is my take on the matter:
You are the parent. You raise your children the way you believe is right. There's no judgment there at all.
As far as Disney is concerned, in accordance to your beliefs, you need to ask these questions:
1. Do your kids know the difference between what is real and what is make-believe? (If not, it will be difficult to tell them how to distinguish it while in the park.)
2. Are your kids easily afraid of loud noises and darkness? (If they are, don't waste your time because everything from Buzz Lightyear to the teacups is loud.)
If you are that concerned, you may wish to keep them at home until you think they are ready. Personally, my kids didn't go to Disney World until they were both at least 48" tall. Why? Because my kids will have fits if they couldn't ride a ride because they were "too small." And I had to have discussions concerning real and make-believe. As a matter of fact, I didn't know that they would like it until they rode their first ride "Star Tours." (But they were big Star Wars fans, so that helped!)
Now as a Christian and minister, may I make another suggestion: Not all magic adaptations are bad. There are great fantasy books that teaches about the things of God and the words "Magic" is said throughout.
For instance, one of the greatest Christian novels ever written was a book series by a Christian author name Tolkien. His books were "The Lord of the Rings." Great book that teaches a lot about the things of God... (Jesus, by the way, are actually two people in the series- the sin-burden carrier Frodo and the overcoming King Aragorn.)
Now the Lord of The Rings is not for kids. But perhaps you can look at another book and movie that is a great Christian epic. It was written by the person that Tolkien actually witnessed to and led to the Lord. Those books are The Chronicles of Narnia. It's very simple to see the analogies there. The Lion is Jesus. The White Witch is Satan. The "Deep Magic" is the Holy Spirit.
And the one movie that really helped my two DSs in the Faith was actually Star Wars. Get it: The Force is the Holy Spirit. The Darkside is evil.
As a matter of fact, as long as there's good and evil, you can use it as lessons for teaching. In Snow White, the Witch had an issue with vanity. And she tempted Snow White with an apple. In "The Little Mermaid" Ariel got in trouble due to disobedience. In Peter Pan, the brave boy defeated evil by being courageous. In "Toy Story" it teaches about the power of friendship.
You can go on and on. But these stories are not stories to propogate magic and witchcraft. If you can teach your children about the power of imagination, and that the experiences are merely products of someone's imagination, you can teach a child a lot of life stories just by experiencing the stories in Disney.
(Off my little pulpit- unless you want to pass a collection plate around.)