It's a bit unclear what 'hometown - related story' implies. If it's a real - life story about your hometown that has some significance for you, like a family tradition or a local legend, you can use those elements to create a unique wedding in your hometown. But if it's just a made - up story, you can't get married within that story. You can only use it as inspiration for your real - world marriage in your hometown.
If by 'hometown - related story' you mean a fictional story set in your hometown, no, you can't actually get married in a story in a literal sense. But if it's about having a wedding inspired by the stories or memories of your hometown, then yes. You can incorporate elements like the scenery, traditions from your hometown - based stories into your real - life wedding.