I continue to go to Wal-Mart and Harris Teeter down the road, about twice a week. I'm in eastern NC.
At Harris Teeter, the mask participation rate for customers is about 40%, staff about 80%. At Wal-Mart the mask participation rate for staff is very high and the store is taking a lot of precautions including aisle flow indicators to minimize people passing each other.
But as far as the customers go, the mask participation at Wal-Mart is definitely no more than 1 in 5 (20%) and probably half of that. And very people follow the aisle flow indicators.