Said wing shops (if we are talking about the same company) have unrevealed in my area for one company, and these revealed ones for another. Maybe I've even seen a third MSC have them? Who knows what that's about...
My last one, the waitress won the $50, even though she BARELY met the requirement ("want something to drink?" (silence) "we have Coke products"
and was not a stellar server overall. I would have rather given it to the manager, who did say jokingly to me, "Oh, do we all get this?" I wanted to say, "I wish! and point out that I was getting zip for it myself...
It is fun to be able to reward people, but so frustrating that I had to in this case.
But as others have said, I go easy on the revealed shops, since I don't want to be identifiable for future unrevealed shops...