Now this does tell a story, and it's specific music like this that is useful for certain scenes. What's great about orchestral is the fact that the music can tell any story you want, and you're not restricted by your instruments or the contents of lyrics. As the song progressed, I could really picture the dance scene you described, and that's how you know you've created a good piece.
The strings in this -- particularly the solo violin -- are well written, and you utilized percussion very well to compliment the other instruments. Everything adds a satisfying fullness to the entire track.
Here are a few things you may improve on:
The production quality is very good, though I would have liked a little more reverb without going overboard.
As far as instrumentation, everything is great except a minor issue -- the snare/field drum is just a bit too loud -- percussion blends much better as instruments in the background, and that's why they're usually the ones in the back of the room. The celesta and glockenspiel combination works really well for this song. The break at 1:19 was a stroke of genius and really adds to the atmosphere.
Overall, I really enjoyed listening to this. Just keep working hard, improving, and trying out new ideas -- that's the best way to define both you and your music; and to make your work stand out above all the rest.