It is a cool idea - haven't tried that at Disney before, though I have used the camera-on-a-stick method for other overhead shots...definitely one where a tilting LCD and live view came in handy to still be able to easily frame the shot.
If you try it Tim, you should give it a go with the NEX6 - you can hoist the camera up on the monopod or tripod, and use your smartphone remote to view, frame, and trigger the shot!