From what I remember... the Book Cadillac Ballroom was recreated with much [[but not all) of the ceiling plasterwork recreated.

But the Fort Shelby was going to use a cheaper route... namely "stenciling"... where instead of 3 dimensional ornate plasterwork, 2 dimensional images of the detailing was used.

Haven't been there, so I cannot confirm this 100%... but that's what I read when the Fort Shelby was being renovated.