You're allowed to have facial hair at subway. Basically, your allowed one ring on your finger, no dangly earrings, no facial piercings (unless really small), and you have to have your hair up and neat and tidy, and you have to wear your expected uniform lol. Hope this helps.
Yeah I think subway does it also
same in some supermarkets tidy dress code
If you look up the employee handbook it states grooming standards for facial hair and it is not permitted however it is up to the individual franchise owner if they want to enforce that or not or so I've been told from corporate subway