Student or Learner
It is unreasonable / unacceptable for your requirement to advance the payment. We had reminded you before do not early produce the goods, as the latest shipment is Dec 30. Although we are required shipment postpone to Jan 10. But you can deliver the goods at the first day from the vessel closing date. (Normally, there are 3 days advance opening dates for the vessel closing date.)Actually, the postponed schedule is close from the original schedule.