In fanfiction, Harry could react in various ways. He might be curious about this new place. He'd start exploring, looking at all the strange buildings and people. But he'd also be cautious because he doesn't know if there are any threats. He might also try to find other wizards or witches, thinking that there could be some kind of hidden magical community in Vegas. As he explores more, he'd gradually get used to the muggle environment while still trying to figure out how to get back to his normal life in the wizarding world.
Well, in fanfiction, it could be really interesting. Harry might first try to figure out where he is. Since he's in Vegas, he could encounter all sorts of muggle things like slot machines and big shows. He might use his magic by accident and cause a stir among the muggles. And then he'd probably start looking for a way to get back to his own world, either by trying to find some kind of magical object or by using his own magic in a new and creative way.
He is probably very surprised at first. After all, coming from the wizarding world, being knighted by the Muggle Queen is quite unexpected.
At first, he may be in disbelief. But as he starts to understand what he's seeing, he could become solemn. He realizes the weight of the future and the responsibility he may have to shape it in a positive way. He might also feel a bit of fear, especially if he sees the loss of his friends or loved ones. But overall, his Gryffindor courage would likely kick in, and he'd start to think about how to face whatever the future holds.
He could be shocked at first. Imagine finding out that your whole life has been based on half - truths. He might need some time alone to process it all.
He would probably be very confused at first. He'd look around, trying to figure out where he is and how he got there.
He might be very frustrated. Without his glasses, he can't see well, which is a big handicap for him. He could be trying to use his other senses more acutely, like listening for any approaching footsteps or voices. He might also be thinking of ways to break free from the bindings using some basic spells he can do without clear vision, like a simple levitation charm to try and reach for his glasses if they're nearby.
Ginny might be initially heartbroken. She could lock herself in her room and cry for days. After all, she loves Harry deeply. But then, she might become angry and start to focus on her own life more. For example, she could throw herself into her Quidditch career or her studies at Hogwarts.
Harry could be heartbroken. He might isolate himself for a while, not wanting to see anyone or do anything. Just staying in his room, crying and reminiscing about the good times with Edward.
In some fanfictions, Harry might become very angry. He might feel that Ginny is being unfair or not understanding his situation. This anger could lead him to say things he doesn't really mean in the heat of the moment. However, deep down, he's really hurt and confused.
Some might be in shock. After all, Harry has been such an important figure in the wizarding world for so long. His friends like Hermione and Ron would probably be very worried about him and try to find out where he went. The Ministry of Magic could be in a panic, fearing that without Harry, they'll be vulnerable to new threats.