Hello, Jennifer!
I don't blame you for wanting to check out the new Disney's Art of Animation Resort! I'd love to stay there, too!
I think that your children will easily be able to sleep in both the double-size sleeper sofa as well as the double-size Inova TableBed. Check out the room specifics on
Disney's Art of Animation Resort's "Room Types & Pricing" page for more information. These Family Suites, which sleep six, also offer the convenience of two bathrooms and a mini-kitchen, which is great for a family of four!
You could surely be comfortable with a Little Mermaid Standard Room, too, but if you are concerned about the two girls sharing the second bed, why not get the suite which allows each one to have her own space?
Hope this helps! Please send additional questions as you think of them! We love to help!