My partner and went one night, and my cousin and his partner the next night.
Over both nights we agreed that the costumes and stage setups were amazing, but the dancing was average. A lot of the dancers seemed out of time and unenthused, which was disappointing for such a big production on the champs elysee that's supposed to rival the Moulin rouge. We didn't get to Moulin rouge so can't compare.
The entertainment between dancing sets was very good.
You could substitute the champagne for beers.
They insisted you cloak your coat for 2 euro, which was just a nightmare to collect at the end.