So, this thought just came to me...
The DCA and WDW versions of Little Mermaid will be identical from the load belt to the unload belt. The Omnimover has an identical footprint, and the ride's rooms and sets and animatronics are identical, with the WDW version getting the upgrades to animatronics and projections that DCA's version just got last week.
So... Is this the first time that a ride has been cloned directly for both Disneyland and WDW? I've only been on the WDW version of Midway Mania twice, but I seem to remember it was set up differently and the track in the beginning and end of the ride was changed noticeably. But other "cloned" attractions between California and Florida have noticeable differences to the sets and/or ride systems and tracks; Pirates, Mansion, Space Mt., Jungle, Small World, etc.
Is this the first time a ride itself, not counting the queue or building facade, has been cloned directly and precisely for the two coasts?