This was, in many ways, not Yuffie's usual. She didn't really hang around bars, not a lot. Seventh Heaven she was usually there to see Tifa and annoy the regulars in her own endearing way. Occasionally some of her friends from class would drag her out to a club for a Friday night of fun, but Yuffie wasn't one of the few with a fake-ID.
She was more of a 'taking what is not mine' kind of law breaker, not a 'give me a drink that tastes funky' sort. But she didn't mind joining her friends for some fun.
It just so happened that a bunch of them were looking to go to Florida in the summer, and Florida had a few theme parks that Yuffie hadn't been to (even without going on the big rides, she enjoyed them) which meant money. And rather than ask her dad for anything else, she figured she'd save up herself! Couldn't be that hard.
One of her classmates mentioned this place, Johnny's Saloon. Chrissie's big sister had worked there before and she'd said it was a cool place -good tips, not too grabby, fun atmosphere. Yuffie thought those were a winning combination, but she sort of wanted to see it first before she went in pleading for a job.
She'd been told to 'dress punk' and since she had no idea what that meant, she hadn't. So she probably stuck out like a sore thumb at the bar, trying not to appear like she was up to no good.