We were at a nearby Tarbucks (same district) a couple of months ago. Observed: No hats of any kinds on any of the 3 TM's present, no aprons on 2 of 3 and no collared shirts on any of them. One wore a gray hoodie.
No joke. How does this happen?
Officially, collared shirts and khaki pants are required. Every time Starbucks updated their dress code, I did it for my team. So, when dyed hair and tats became ok at Sbux, I made them ok for us before Target did. Same with the latest dress code update. When Starbucks relaxed theirs, I relaxed ours. (Still has to be white or black, and no jeans). Definitely have to wear hats and aprons at all times.
There are so many more important things to worry about in there than collars.
Our SBTL wears a collared polo but the rest wear non-collared & some of the guys wear Henley-styled shirts.