You get a bottle Great Fairy's Tears. The Fairy Queen also releases fairies into all of the springs.
After beating twilight princess you don't get anything.
No the cave of ordeals is completely independent of the main story and does not need to be completed to complete the game
There are in three City in the Sky, two in the Cave of Ordeals, and one in Hyrule Castle.
by beating the final boss
The cave of ordeals is in the gurudo desert. You find part of the brige of eldin there. Talk to midna to warp it to the brige and come back. there will be a hole. that is the cave.
to the gerudo dessert blocking the cave of ordeals so go get to the desserts 4th temple
theres forest,fire,water,sand,snow,time,sky,hyrule castle and if you do a side quest the cave of ordeals Very Hard
Mainly by usingyour boomerang you havereceived in the Forest temple by beating the monkey. (miniboss)
There isn't an Outset Island on Zelda Twilight Princess only in Zelda Wind Waker and other ones.
Google "Zelda twilight princess game cube walkthrough"
He is the Master Bomb Maker in Zelda Twilight Princess
defeat ganon