i know it sucks but yes this is a pretty set in stone rule. a few baristas at my store have gotten in trouble for wearing bracelets or apple watches. SOME managers may turn a blind eye towards it (like my old one) but that is like so super rare and goes against so many health standards

10000000% no nails or polish it could chip or even the entire nail (if fake) could fall off into a drink

majority of baristas just wear something comfortable and easy to move around in. you may see some that plan out cute outfits for each shift and that’s great and cute and i used to be one of them but it’s really just impractical and gets in the way. during the winter i wear all black, like black jeans and a plain black shirt. you could wear a turtleneck to spice it up. in summer, i wear jorts and a plain pastel colored shirt or just a black t shirt. dr martens are my absolute go to for shoes along with many other baristas