You can go in an hour before your appointment.
I have never been to a Walmart DC that will allow you to check in earlier than one hour before your appointment. This doesn't work well when 50 trucks have a Sunday 15:00 appt. And this is the only DC that I have delivered to that require you to clock-stamp your paperwork when you walk in. My guess is they have a lot of "lates" because of the congested traffic area in front of the gate.
Just show up 2hrs before the appointment
Idk im sure u can
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