My Mickey D’s was a franchise of several locations owned by a couple of local investors.
Yours may have been owned by Mickey D’s Inc. and subject to the law you reference.
No, I’m pretty sure it was a franchise deal. Ollie (the franchise owner) had several stores in the area. I don’t know if the rules were different in different states, or if Ollie simply decided to pay federal minimum regardless, or what. Long time ago, and I just flipped the burgers and didn’t care too much about pay details as long as I got paid.
Anyway, it was a fun job (mostly), but I don’t know if I’d have done it for $1.00/hr. Probably not.