This is the 11543rd most frequent Spanish word.
fan
A person who admires or supports someone or something passionately.
The word 'fan' is used here to refer to an enthusiast or admirer of a particular activity, in this case, European football.
Soy un gran fan del fútbol europeo.
I am a big fan of European football.
In this instance, 'ventilador' refers to a mechanical device for circulating air, which is also called 'fan' in English.
El ventilador está funcionando toda la noche porque es verano.
The fan is running all night because it's summer.
Here, 'fans' denotes the admirers or followers of the movie, showing support and interest in its release.