Let's avoid getting carried away with the idea that travel inspiration mainly comes from fiction; it's a simplification that forgets the flip side.
A film can certainly inspire, but without a reliable travel guide, the risk of disappointment is high, especially when traveling on a limited budget.
Imagine discovering Japan through films showing cherry blossoms, then arriving in the middle of summer under an overwhelming heat without being warned of the real conditions.
It's prudence that saves us from mishaps, by providing practical details and avoidance conditions.
A good guide is a fail-safe against unforeseen events, much more than just logistics after a chimerical inspiration.