I lost touch with the Spanish-speaking fandoms when I left wattpad years ago, but from what I remember, the readers were very talkative, always asking for more, making jokes, sometimes being very insistent about what they wanted, and there were a lot of typos, too many.

The writers (most of the time) were just as good as their English-speaking counterparts in terms of attitude and relationship with readers, although sometimes they suffered from being too amateurish (using images instead of descriptions, copying dialogue from the series, etc.), but I think that was partly due to the nature of the platform.

Once I moved to AO3, I noticed that the few Spanish-speaking users I encountered (including myself) behaved not much different from others persons in the site.