Not bad! ; I've taken something similar too - it's a neat shot. ; Some ideas/critique - maybe I'd experiment with a shorter shutter speed - the long shutter I think blurs out the motion of the carousel too much, so you can't really get much effect - a shorter shutter would look more like a spinning ride. ; Also, the WB looks a wee bit warm - Disney has a propensity to use warmer lighting, so I find either adjusting WB in RAW, or if shooting JPEG, I often adjust to Tungsten before shooting. ; And an 'additional' shot idea would be to try a wider perspective with the castle also in the shot behind the carousel...that's one I've tried a few trips ago, and need to work on as it wasn't as good as I wanted.
I'm looking forward to getting up there again in a few weeks!