I bet the regular customers would include some of Harry's old Hogwarts friends. Maybe Ron would stop by for a butterbeer and a chat. Hermione might come to relax after a long day of research. And of course, the Weasley twins would probably be there often, looking for new business ideas or just to have some fun.
The regular customers in this fanfic could be quite diverse. Besides Harry's friends from Hogwarts, there might be some young Aurors who come to unwind after a tough day of chasing dark wizards. There could also be some students from Beauxbatons or Durmstrang who are visiting the area and want to experience the unique nightclub. And let's not forget the local magical community members, like the shopkeepers from Diagon Alley who come to socialize and listen to the music.
In the 'harry potter owns a nightclub' fanfic, the regular customers could include a wide range of magical beings. There would likely be some house - elves who have been given a night off by their wizarding families and are looking for a bit of entertainment. Some centaurs might also visit on rare occasions, interested in the new cultural experience. Additionally, many of the witches and wizards who work in the Ministry of Magic would be regulars, using the nightclub as a place to network and relax. Harry's godson Teddy Lupin might also be a frequent visitor, growing up in the wizarding world and enjoying the nightlife.
Hermione would probably be a regular. She'd come to the cafe to study while enjoying a warm cup of Butterbeer latte. She might even bring some books from the Hogwarts library to read there.
Hermione would definitely be a regular. She might come to the bar to relax after a long day of studying ancient spells at the library. Ron would also be there often, enjoying Harry's special butterbeer with extra foam. Hagrid could be another regular, coming in for a large tankard of a strong, warming drink.
Well, it could be all kinds of magical music. Maybe there's some enchanted harp music that fills the air, or some upbeat wizarding rock. Since it's a fanfic, the possibilities are endless. It could also be some ancient incantation - like music that only wizards understand.
His old ninja friends like Sasuke, Sakura could be regulars.
Fellow wizards or magic - users could be regulars. They might come to the bar to unwind after a long day of using magic. Some might be there to exchange stories about their magical adventures or to seek advice from Harry, who has his own share of extraordinary experiences. They could include a young wizard just starting out, looking for guidance from Harry, who is seen as a bit of a local legend in the bar.
His old friends from Hogwarts like Hermione and Ron could be regulars. They might come to support Harry's business and also to buy some useful things for their own magical lives. Maybe Neville would come to buy some special plants for his own gardening projects.
Students from Hogwarts could be regulars. They might come during Hogsmeade visits. Also, young wizards and witches starting their careers in Diagon Alley would stop by. And of course, some of the older professors might pop in for a cup of their favorite brew.
His old friends from Hogwarts would surely be regulars. Ron and Hermione would be there often. Neville might come to relax after a day of teaching Herbology at Hogwarts. Luna could drop by to share her latest theories about magical creatures while sipping on a strange - looking drink. Hagrid might also be a regular, though he'd need a special - sized chair.
I'm not sure who owns it. You might need to check local business directories or recent news for that info.
I think magical creatures would also be customers. Maybe house - elves would be sent to pick up treats for their wizarding families. Hippogriffs might be lured by some special bird - shaped pastries. And even centaurs, if they were feeling a bit more adventurous, could come to the edge of the Forbidden Forest where the bakery might be located to get some goodies.