Well, one interesting aspect is the cultural exchange. When Hermione speaks French, it often leads to interactions with different wizarding cultures, like those from Beauxbatons. It adds a new layer to the Harry Potter universe we know.
One popular 'hermione speaks french fanfiction' is 'Hermione's French Adventure'. In this fic, Hermione uses her knowledge of French to solve a mystery in the wizarding world of France. It's a great read if you like seeing Hermione's character in a new and different setting.
One possible plot could be that Draco uses his French skills to charm a French exchange student at Hogwarts. He might show off his knowledge of the language, French cuisine, and culture to impress the student.
Well, I'm not sure of a specific 'Draco speaks French' fanfiction off the top of my head. However, you can look through different fanfiction communities dedicated to the Harry Potter fandom. Some stories might have Draco speaking French as part of a plot where he's showing off his cultured side, or perhaps he's using it to communicate secretly with someone.
Yes, there are islands where French is spoken. For example, Haiti in the Caribbean. It was a former French colony and French is one of its official languages. The influence of French can be seen in its culture, literature, and daily life. People there speak a form of Creole which has strong French roots as well.
One example could be a fanfic where Hermione uses her Russian to communicate with a group of international wizards. Maybe she's on a mission and Russian is the common language among a certain faction she needs to interact with.
One possible plotline could be that Hermione is chosen to be an ambassador of sorts for the Hogwarts students when they visit Bulgaria for a magical exchange program. So, she has to learn Bulgarian quickly to communicate effectively, and this leads to various adventures and cultural exchanges.
Well, sometimes it's portrayed as a natural extension of her book - learning nature. She's constantly reading and studying, so picking up different languages seems like a no - brainer. Fanfic authors might show her using her language skills to communicate with magical creatures that have their own unique languages. For instance, she could use a form of Elvish to talk to house - elves, which not only helps in understanding their culture better but also in advocating for their rights within the wizarding world.
In the fanfiction, it might be that Harry is sent on a mission to France. He then has to fully immerse himself in the French - speaking wizarding community there. He uses his French to gather information, make friends, and ultimately complete his mission, all while dealing with the differences in French magic compared to what he's used to in England.
One 'harry speaks french' fanfic that might be interesting is 'The French Adventure of Harry'. It has an engaging plot where Harry uses his French language skills to solve mysteries in a magical French setting.