Their first date
I know, I know, it's an Elvis movie and logic doesn't apply. And I recall that Elvis says something about knowing the helicopter company owner pulling a favor...
But still, did anyone notice how expensive Elvis and Ann-Margret's first date surely must have been, despite the fact that his character was supposed to be recently broke? In fact, isn't that one of the main plot points?
Not calling this an error, just one of the things about this movie that makes me laugh... (not to mention the money going into the pool suction.)
The war is not meant to be won... it is meant to be continuous.