Wonder Girl's golden lasso alternates between the left and right sides of her belt between shots outside Bremer's estate. You can see that the close up/front view shots are of Debra Winger and the long shot/back side shots are of stunt woman Jeannie Epper.
When the villains are being rounded up Jim comments to Major Trevor that he hopes to see Wonder Girl again. During his two brief interactions with her they never speak so he would never have learned she was called Wonder Girl.
During WWII, the HOLLYWOOD sign would have been HOLLYWOODLAND.
LAND was removed about 1949
When changing into Wonder Girl, Drusilla spins counterclockwise, yet in her previous appearance she remembered that Diana and she both had to spin clockwise in order to change.