Will Galley remind us when a report is due?

Yes. Everyone on your team who gets Access and file requests emails (see which emails does my team get?) gets a reminder 5 days before a report is due and another on the day, if it hasn't been sent, during the day India time. Each goes once. For a report from Margin, the reminder says where Margin's month has got to.

Your Dashboard's Needs your attention shows reports that are Overdue and those Due soon (within a week), each with Send. The lender's card in the loan tracker shows how many are overdue and when the next one is due.