Is it a store policy in Hermitage to not sell wine before noon on Sunday, because the Tennessee state law is 10:00am to 11:00pm?

Yes it is store policy

Not sure about hermitage itself, but I do know that in Alabama, different counties can have local laws differ from the state of federal laws. Some counties can be dry, some counties restrict Sunday sales. I'm sure it could happen here in TN as well.

Yes ma'am