Well, Harry Potter is a rather humble character. He might initially feel a bit embarrassed to see himself as the center of so many fictional stories created by fans. If the fanfic portrays him as a hero in new adventures, he would probably be honored. However, if it misrepresents his friends or the values he holds dear, he could be a bit indignant. He would likely approach it with an open mind but also with a sense of protectiveness towards his own story and those he loves.
Perhaps the travel agent is a bit of a troublemaker. Instead of suggesting normal wizarding travel destinations, they might try to persuade Harry to visit some off - limit or even illegal magical places. They could tell him about a secret portal to a dimension where dark magic is still being practiced freely, which of course, Harry would have to resist.
Hermione would probably be both curious and worried. She'd want to research all about Harry's half - demon nature to find out what it means and how to help him. Ron, on the other hand, might be a bit more hesitant at first. He might be a bit scared but would eventually come around because of his loyalty to Harry.
Hermione would be extremely curious. She would immediately start researching it, trying to figure out its mechanics and where it came from. She might even try to find a way to improve it or adapt it to the wizarding world's technology.
The Dursleys' reaction would be complex. Vernon would be enraged and might even try to burn any fanfiction he found. Petunia would be conflicted. Part of her would be disgusted, but a small part might be a bit curious as she has some connection to the wizarding world through Lily. Dudley might be more interested than his parents, especially if the fanfiction had some action or adventure that appealed to his more adventurous side.
If Harry is turned into a weapon, Ginny would be heartbroken. She would be by his side constantly, trying to communicate with him even though he's in weapon form. The Weasley family as a whole would be outraged. They would see it as an attack on one of their own. Snape might initially seem indifferent but secretly would also try to find a way to reverse it, perhaps out of his complex feelings towards Harry and his loyalty to Dumbledore.
In fanfiction, when a character's wand explodes, they'd be in a state of utter disbelief at first. Their wand is like an extension of themselves in the magical world. After the initial shock, they'd start to worry about how they'll function without it. Some characters might immediately start looking for ways to repair it if they're knowledgeable enough. Others would rush to get a new wand, but that's not always easy. They'd also be worried about how their friends and enemies will react. Their enemies might see it as an opportunity to attack, while their friends would be concerned for their safety. The character would also probably start reflecting on what could have caused the explosion, whether it was a spell gone wrong, a curse, or some sort of magical malfunction.
He might be curious. Harry is always eager to learn new things. He'd probably read it with great interest to figure out what this new world of RWBY is all about.