Saturdays and Sundays are the busiest days and there must be a Goodwill attendant there to take the donation.
Weekdays aren't too bad. The 8th and 9th are going to be the busiest days since there's another sale.
I'd call and ask, to know for sure.
Weekends, as Zack says are usually the busiest intake days. I'd call to check on when they process and tag the most items for output.
I would call them on the phone ,probably get you a better answer
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