Some people at my store wear vans but if I wear them i usually bust my ass

They're not allowed but I don't recommend them anyway cause if you fall while wearing shoes that aren't nonslip, Starbucks doesn't have to pay for your injuries

I wear canvas vans and slip and slide all over the place and still slip nearly every day so I’d be careful but you can try it lol.

the canvas vans are allowed, but probably not the best choice since u can still slip wearing them :\\

U shouldn't for ur safety and also it's not dress code (I think). But it depends on ur store honestly, if ur SM & DM are chill you'll be fine.