McDonalds is the stupid

I just noticed the advertising on this cup from McDonalds. In case you can’t make it out, it says,

open ’til midnight or later
at participating McDonalds

Parsing this for semantic value, what have we learned? Some McDonalds are open until midnight. And some are open later. And some are open not that late. Which covers all possibilities. Somehow, I don’t think I needed this bit of cup advertising to know this.