Doors are supposed to be open by 6am. If not you should talk to the manager and find out why. If he or she can't give you an acceptable answer contact corporate office.
Knock, if someone sees you they're likely to open the door. Also sometimes if it's early or late, they only open one of the doors so check around!
Not sure. Maybe door opens at 8am.
6:10am
don't call corporate, that's such a silly and redundant thing to do
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