A quick comment about the Circle K shops - many of which have disappeared.
I recently did a Yellow, mollusk shop that was also a Circle K. The employee told me that they have not had a mystery shopper doing just the Circle K portion in many, many, many months. She said that they have been informed that when the shop becomes scheduled, CK shall inform them that the event will be happening in the given time span. They said that would be inside a 3 week period.
However, the employee also stated that CK told them in was not a problem one way or the other, a fail or otherwise.
I left there wondering just what is the point then if the brand doesn't really seem to care.