No, I don't mean go in and tell them off or anything!
I was at Publix yesterday and in my bag was a flyer "Tell your manager how you really feel. Come in on saturday from 12-4 to tell your manager how you feel about your local Publix".
So if you have any concerns or COMPLIMENTS, here's a great opportunity! This is also a good time to go and introduce yourself to the Store Manager at your local store.