Edit: holy crap, Luna's a dreamwalker?
Yup. Best part of the episode.
So that was...eh. Good focus on Scoots and Rainbow, good use of Luna, but everything else was kind of dull, I thought. The basic premise has been done to death by every other kids show out there, Rarity, AJ, Applebloom and Sweeite Belle didn't contribute anything to the plot, and the scary stories were really cliche and unimaginative. I don't know what the episode needed but it was missing something to take it from okay to great.
I have to say, outside Magic Duel, this season feels lacking. And given that Magic Duel was a holdover from last season, that's not a good sign.