Instead of using numbers for table designations, your tables could be Disney movies or characters. They also make Disney inspired invitations. Our wedding is not a Disney theme, but we are using Cinderella inspired invitations. It's got her coach and castle and it's very beautiful color lavender.
I mean Disney is inherently a collection of children's movies, so I don't know that you can avoid it being somewhat childish. So go for subtle, not cartoon-y.Like use this:Not that:And this:Not that:And this:Not that:
One thing to remember is that Disney is HEAVILY copyrighted so when talking with vendors they may very well turn down some Disney specific designs because their company reputation precedes them for not being afraid to sue.
Next, have you actually checked out pricing with Disney since it is all-inclusive down to the last detail? You may outwardly be getting sticker shock, but at the end of the day it very well may be incredibly affordable compared to breaking down the pricing into the individual vendors to the point that the only real stress you have is showing up with your dress on time.
Etsy is also another great place to look for items for Disney theme that may not be tacky or childish.
Even if you don't purchase from the specific vendors you can get great idea inspirations from them.
One of me favorite's for cake toppers is Bee3Dgifts. (see Beauty and Beast topper attached).