I've enjoyed Soarin at DCA many times, and I have to admit, it's not a true thrill ride but it most definitely is an "E-Ticket"!
Without giving away too much of the show, it will be fine for people with motion sickness, and a great place to be on Floridas hottest days. The lines will be long...
Unless things have changed recently, the entrance will be where the "Food Rocks" entrance was located. Expect a long que area. In DCA, the attraction building is sunk into the ground pretty deep, perhaps this was not possible in the EPCOT location. The attraction building needs the height to accomodate the Imax screen.
The attraction was conceived by Senior VP Disney Imagineer, Tony Baxter, in a "restaurant" on a paper cocktail napkin. Reception and support to the idea was immediate and planning for the show was given priority AND budget. The "Good Guys" won! At some early point in time, it was decided that Soarin would be built at the other parks. There was discussion that each location would have a "custom" film prepared to localize the flight experience. Not sure if that idea was scrapped temporarily for the usual budget considererations or not.
However, the most important things about this new attraction is that it is unique, enjoyable and it is 100% DISNEY! And the word for that is IMAGINEERING!!!