I used to work in retail/service. Not something with data and metrics, just a mom'n'pop. But we knew our customers. We especially knew our regulars. And you did try not to piss off a regular.
But from this I learnt that people will try to play their 'value' as a trump card when they want to complain. Do you know who I am, do you know how much I spend here, I come here every day, blah blah blah. They are very quick to make sure you know this isn't about a $4 coffee, this is about keeping them & their business.
This isn't a secret, It's just an answer. Yes, they do know who you are. Surprise!