Jude, that's actually part of the way they redesigned questing. When you turn in a quest you get some of your rested back. So you can indefinitely stay rested. Also, the mounts you get at level 30 are the mounts that you originally got at level 40. There are new mounts you can get, such as a few different mammoths, a war bear, a new flying mount for northrend, and an actual drake from wyrmrest.

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"BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Will he offer me his mouth? BOY: Yes. GIRL: Will he offer me his teeth? BOY: Yes. GIRL: Will he offer me his jaws? BOY: Yes. GIRL: Will he offer me his hunger? BOY: Yes. GIRL: Again, will he offer me his hunger? BOY: Yes! GIRL: Yes. BOY: On a hot summer night, would you offer your throat to the wolf with the red roses? GIRL: Yes. BOY: I bet you say that to all the boys!" -Meatloaf