This movie is a fun ‘what if’ that meanders along amicably until its ‘sure, why not’ conclusion. It takes itself unseriously enough to relish its own absurdities, which keeps it from subverting its premise in the payoff. It’s a lighthearted film and not much more.
Closest comparison: It’s like My Fair Lady by way of The Philadelphia Story.
Setting: Decadence
Plot: Prince/Pauper
Tone: Comedy