You do not erase the reference links until the film/episode premieres and you do not insert the casting unless they have been confirmed. And also where is the proof that says the next Elena episode will premiere on December 9?
How do you intend to do that? Commercials are unpredictable, you wouldn't be able to record it in time. My suggestion is to search the web, keep an eye on the current TV listings and hope it leaks onto YouTube or something.
What do you think you were doing? You messed up perfect layout on the Gabe page, and made a dozen inappropriate edits. My advice to you is gain more experience before you think about submitting any changes.
I'm going to take this to you, since I'm not sure if this goes somewhere or not. But the girl Near the end of the episode, a little girl wearing glasses and standing in a small crowd exclaims “He saved them!” It turns out the voice of this little girl came to Disney as part of the Make-A-Wish foundation.