i just got a review on yelp that docked me a star because "The coffee is tediously brewed one cup at a time. I supposed this means no refills."...
Often times, it's not so much the policy itself, but the attitude of the barista.
I've know a shop that doesn't carry artificial sugar tell a diabetic that "We work to hard for you to ruin it with artificial sweetener."
The diabetic customer walked out and went to Starbucks.
I find the policy legit but the customer service in this particular instance superbly poor.