He was a firm believer in The-Big-Night-Out. Rose's nightclubs and revues were the toast of New York for decades.
He really hit the legit with the 1939 World's Fair—Billy Rose's Aquacade—"a brilliant girl show of spectacular size and content". Starring Olympian Eleanor Holm (who Rose married after divorcing comedienne Fanny Brice), the show also headlined future MGM soggy star Esther Williams and Tarzan himself, Johnny Weissmuller.
When Rose died in 1966, the 'little Napoleon of the show world' had an estimated fortune of $42 million (funding a foundation in his name, snubbing his two sisters).
I've got some more Billy Rose stuff around here somewhere, but darned if I can find it. At least here's a bit of it.