Here's something that's been nagging me that I can't find with Google: what's the history of "free refills" at American fast-food chains? Restaurants more generally?
I have a recollection that Subway was the first place to offer free refills, but I can't remember when it started. I think I was old enough to desperately prefer Subway over other restaurants because of the "free refills" policy, and I remember other fast-food joints quickly following suit.
Did sit-down restaurants always offer free refills of soft drinks, or did they come after the fast-food "free refill"? Is my memory that the "free refill" phenomenon began with Subway correct? Does anyone know what year it was?
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