The dress rehearsal of the ceremony for the 2012 London Olympics. Exactly the same as the official one, minus the VIPs.
No, this is not what the ceremony looked like in ancient times. It is just an idealised version of what ancient dances might have looked like, but with a few concessions to modern aesthetics (such as the tank tops of the male dancers) and morals (in antiquity the men would have danced naked).