Love these shops! They're easy and take very little time. Be aware, though, that (unless things have changed) if you do a compliance shop, you're ineligible to complete a phone/service inquiry at that location. I tried once because the guy who was at the store for the compliance shop wasn't an employee at that store and was just filling in for the day. So he was extremely unlikely to be there again. But the scheduler said he couldn't make the exception. They're concerned that you might be recognized from the compliance shop if you do the mystery shop.
I learn something new every day, but not everyday!
I've learned to never trust spell-check or my phone's auto-fill feature.