Their meeting could also mean that Fleur might be more protective of Harry at Hogwarts. Since she knew him before, she might feel a sense of responsibility. So, during the Tournament, she could offer him some tips or help in a more discreet way, which could change the dynamics of how the Tournament unfolds for Harry.
If there was a rivalry before Hogwarts, it could carry over and make their interactions at Hogwarts more tense. However, this could also lead to them pushing each other to be better. For example, in Quidditch, if Fleur is also a good flyer, Harry might strive to outperform her, which could improve his skills as a Seeker. And over time, this rivalry might turn into mutual respect.
If they meet before Hogwarts, they might already have a sense of loyalty towards each other. So when they get to Hogwarts, they could look out for one another. For example, in a dangerous situation like a run - in with a rogue magical creature, they would be more likely to help each other compared to if they were just acquaintances. This pre - Hogwarts meeting could also mean they have inside jokes or shared memories that make their Hogwarts years more enjoyable.
One possible plot could be that they meet during a wizarding event in France. Fleur, being from a French wizarding family, might be at a magical fair. Harry could be there with the Dursleys on a 'family' trip (forced by the Dursleys to go to France). They accidentally cross paths and Fleur, sensing Harry's unique magical aura, strikes up a conversation. This could be the start of an interesting pre - Hogwarts friendship.
Well, they might already have a support system in place. When they arrive at Hogwarts, they could be more confident because they have a friend they already know. For instance, if they face bullying from other students, they can rely on each other.
Fleur could become an ambassador between the wizarding communities of Britain and France. Harry, having a great reputation, could support her in this role by being a symbol of unity. He might also write books about his experiences, which could be used in magical schools as a way to teach about the importance of fighting against evil. In this way, they both have careers that are intertwined with the betterment of the wizarding world.
Well, one possibility is that they could form an early friendship. Maybe Fleur, with her Veela charm, would initially intimidate Harry, but then they find common ground in their magical abilities. For example, they might discover they both have an affinity for certain types of magic that are not common among their peers. This could lead to them sharing magical secrets and techniques before even reaching Hogwarts.
It's also likely that Harry, having faced so much darkness, decides to take a break from the wizarding world for a while. Fleur, on the other hand, is still very much involved in the magical community. She might persuade Harry to come back and they start to explore different magical cultures together. They could travel to far - flung places, discover new spells and magical creatures, and in the process, their relationship blossoms.
If they were friends before Hogwarts, it could create a lot of internal conflict at Hogwarts. Draco might be torn between his new Slytherin friends who dislike Harry and his long - standing friendship with Harry. He might try to keep their friendship a secret, which could lead to misunderstandings between them.
Maybe he meets an old Canadian witch who has a lot of wisdom about a certain type of magic that is rare in the UK. She could give Harry some valuable advice or a magical item that helps him later at Hogwarts.
He might run into some of his old professors like McGonagall. She would be glad to see Harry back at Hogwarts. And perhaps he'll also meet some new students who look up to him as a hero. These new students could ask Harry for advice on how to be brave in the face of danger and how to master difficult magic spells.