I'm not saying Harris Teeter specifically but I've talked to a couple of grocery stores and they've said later evenings haven't been bad. Good luck and everyone keep well:)
I would call and ask if they have certain hours for seniors and immunosuppressed systems ... Some establishments are starting to create times for this demographic and the only way they know they need to is for people to call and ask for this need. Stay safe... Also you may want to order pickup to minimize your risk.
Probably when they first open. Don't forget the wet naps when you walk in
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