In the fanfiction, if Harry goes to Dudley's wedding, it could be a chance for them to finally fully reconcile. Maybe Dudley, who has grown up a bit, would introduce Harry to his friends as his long - lost cousin. Harry, on the other hand, could bring some magical charm to the event. He might perform a little magic trick for the kids at the wedding, like making balloons float without strings. This would make the wedding more fun and memorable.
If Harry goes to Dudley's wedding in fanfiction, it could be a very emotional event. Harry has had a complex relationship with Dudley over the years. At the wedding, Harry might see a different side of Dudley, a more mature and loving side. He could be a bit nervous about going, but once there, he realizes that family is family, whether they are wizards or muggles. He might also meet some interesting muggle relatives of Dudley's and share some stories about Dudley's childhood with them, creating a bridge between the two worlds.
In this fanfiction, Dudley might face a lot of challenges. He's used to a different world than Hogwarts. He could struggle with magic classes as he has no prior knowledge. Maybe he'd be bullied at first for being a Muggle - born in the eyes of some students. Also, his relationship with Harry could change in a new and interesting way.
He might be received with a mix of curiosity and caution. Some of Dudley's friends and family who know about their past might be a bit wary of Harry at first. But those who don't know their history could be intrigued by this mysterious new guest.
Well, they might meet in a rather unexpected place. For example, Dudley could be on a business trip and end up in a town near where Harry lives. At first, they might not recognize each other. But when they do, there could be a flood of memories. They could end up having a meal together and during the meal, they start to really understand each other for the first time. Dudley could apologize for his past behavior, and Harry could accept it graciously.
They might finally make peace. In many fanfictions, Dudley has grown and realized how wrongly he treated Harry in the past. So when they meet again, they could start to have a normal conversation, maybe even become friends or at least be civil to each other.
In this fanfiction, Harry might see a world where magic has evolved in ways he couldn't imagine. Maybe there are new spells and potions that are far more advanced. He could also encounter the future versions of his friends and enemies. For example, he might find out that Ron has become a very important figure in the wizarding world, or that Voldemort's influence still lingers in some unexpected ways.
Well, perhaps Harry would be amazed by the different teaching styles at Beubaxtons. He might make new friends and learn new magic that Hogwarts doesn't teach.
Well, maybe Harry discovers some magical secrets in Salum. He could meet new and interesting characters there.
Well, he might visit some magical places that are not shown in the original books. For example, a hidden beach with mermaids and magical sea creatures. He could also meet some new characters who are on vacation as well, and they could have all kinds of adventures together, like exploring a mysterious forest filled with enchanted plants.
Maybe Harry is injured during a Quidditch match and has to be rushed to the hospital. There he might meet some interesting new characters, like a healer with a mysterious past.
Well, he might encounter some magical items that are only available in certain wizarding shops. Maybe he'll find a new type of wand core or a potion ingredient that's super rare.