How do you know when you're a regular pub diner?

How do you know when you've become a regular diner at the pub?

Mim was spending time with Charlotte whilst I took Caitlin to the dentist. As it was lunchtime, Carla asked Mim if she would like a sandwich.

The response Carla got, "Not now thank you, I'll put my order in later."

I believe Carla's response was something along the lines of "I'm not running a cafe here!"