I have not seen the film so I cannot comment on the differences between it and the musical. The story, of cause, is well known: three fish out of water travel west across the desert from Sydney to Alice Springs to perform a drag show.
You will love this show as long as you are not offended by ... Disco Music. There are 25 disco and pop hits including: Downtown, Venus, Go West, I Will Survive, Girls Just Wanna Have Fun, Hot Stuff, Macarthur Park and We Belong . The songs don't add to the story line but provide many big production numbers. For example, in one scene Bernadette and the Mechanic spend a night outside the bus around a camp fire. Bernadette provides a cake for the occasion. In the morning she is seen sleeping with the cake as a pillow. Tick leaves the bus and notices the scene outside. He or should I say she, removes his dressing gown and is wearing bright green pyjamas. He then sings Macarthur park accompanied by dancers dressed as green cup cakes.
The production might have improved if the songs had been chosen to extend and comment on the action, but they are presented with such brio and flamboyance that to my mind their irrelevance to the plot is unimportant. It might be a play with musical interruptions, but what fantastically exciting interruptions.
If you enjoy musical theatre and are not put off by homosexuality (or Disco Music) then don't miss Priscilla .