I do my best NOT to patronize these places. Even had to quit eating at McDonalds in OKC. They should just rename it Santionalds. Very few English speakers work there anymore. It's a shame.
If you're talking about the one on MacArthur and I-40, I know exactly what you mean. I went there once at about 12:30PM and was wondering why there weren't that many people there. Turns out, not a single person spoke or understood a lick of English. "Number 10" was responded with "No habla Englis".