Okay, so we have writers who decided to do a take-off on Private Benjamin, add in a little Hallmark Royal Trope (in this case a princess), wedge in a love interest, and try to make something funny.
Well, there was one laugh and a few chuckles, but their script failed to live up to their ambition for this movie. They got across that the princess was spoiled, but never could add any real meat to her change in the ten-day boot camp.
Not nearly enough happened between the princess and the captain to build a relationship, so the love story fell flat. The captain's best moments were early on when he manned the returns desk at a Walmart/Target type retail store, and that was over very early.
It's watchable, barely. We won't be repeating the experience.