Vendors and meat skewers always seem to be the go to in medieval European isekai Manga. They're pretty much non-existent in western fantasy depictions. If meat is for sale, it's usually dried and for making a meal later, not to eat while enjoying what looks like a Matsuri. It's not a nitpick, I'm just taking note on the eastern depiction of western fantasy. My guess is that they're using their only frame of reference for outdoor, temporary stalls and choose something that is fairly not culturally specific or modern.