During the orgy dance number, one of the dancers is, in reality, director Andy Fickman's wife, and another dancer is Christian Campbell's real life girlfriend. Since the film was shot in Canada, the remaining dancers were actually Canadian strippers hired to do the dance sequence.
We are just like Romeo and Juliet. We're happy, young and...
Mary Lane: ...hemorrhaging blood!
While it is indeed true that FDR was wheelchair-bound by polio, he had perfected his ability to walk with the support of someone else's arm and could stand upright for a long period of time. He never appeared in public in a wheelchair, and in fact it was not even known outside his circle of associates that he was wheelchair-bound until after his death.
After the end credits roll, Satan appears in Heaven and laughs at the audience.