so much to go over, so little time...
1. The myth that the sisters sleep through one another's time of day is completely false. Luna eats her breakfast when most ponies would be eating lunch, and Celestia sleeps midnight to dawn.
2. Alicorns are NOT immortal. They have about a two thousand year life span, though.
3. Seeing as Alicorns aren't immortal, they have to choose heirs to take over for them.
4. Twilight is Celestia's heir.
5. Cadence is the princess of emotions.
6. please don't hate on my story...
Interesting story. I think you are doing a great job. I hope you post some more chapters soon. Sorry to see about the lack of responses or votes. Good luck and I can't wait to see Star Shine struggle to be a Prince.