Yes! The ending is great! I love where the Keyhole is!
Yes, it is a very relaxing world. It is my second favorite!
You just have to find all the torn pages and complete all the mini games.
Here are the torn pages locations:
Agrabah: Cave of Wonders: Dark Chamber (below the Cave of Wonder in the underground ruins. ya know, where all the water is!)
Monstro: Chamber 6 (This one is on top if a platform. Just position a barrel where you can jump up and get it! You can alos return here with High Jump. It is on the platform above the highest step.)
Atlantica: Ariel's Grotto (It is in a treasure chest on the shelves of stuff towards the top.)
Halloween Town: Research Lab (Just examine the book case to find that it's stuck right in there!)
Traverse Town: Dalmations' House (It is the reward for finding 54 puppies and bringing them back to the mom and pop.)
There! That's all of them! Hope my explanations helped you!