Universal Studios Florida has started letting guests on Rip Ride Rockit. The hours are sporadic and if too long of a line begins to form, they shut it down to prevent guests from havin to wait hours to get on it.

Also, the on board video cameras aren’t working so no on board videos yet and the moving loading queue isn’t working, so it’s relatively slow to load. (That, and they are always more careful about checking restraints and things on a new ride.)
More details are at the Orlando Sentinel paper.
http://www.orlandosentinel.com/news/local/breakingnews/orl-bk-universal-rip-ride-rockit-081609,0,7711462.story