grunger
Like Malone, I read it to mean that you generally enjoy McD..... meals, but have had a few poor ones. This seemed to make sense as I know you enjoyed the one in Florida. Glad to hear the correct version!
I would say that I am not sure about joineress or joineresses, which seem wrong. But I think carpentress and carpentresses must be right, like actress and actresses. If I remember correctly, there was a singing act called "Carpenter and Carpentress". They were unknown until they changed their name.
Malone
I should be grateful if you would question any of my dubious English, or anything else I write!