More sizzle than grade "B" beef I'm afraid. IMO Peter's makes its money largely on reputation and longetivity rather than quality.
Peter's kills any claim that I could otherwise make to being a logical human being. For some reason I stop there almost every time I go to Calgary, even though I don't really like it all that much. It just seems like an obligation. I guess that I still enjoy the novelty of walking up to the window to place my order. Or maybe its because I can get a chocolate, mouthwash, and bourbon milkshake
Peter's does have passable burgers, fries, and milkshakes. And they have rightfully gained notoriety for serving almost comically sized shoebox portions of fries. But the quality of the food just doesn't match the hype. Perhaps it is due to the large order volumes they continually have to pump out.
The cash only transactions may seem old-fashioned and nifty to some, but likely a dubious veil to the Canada Revenue Agency.