Does that mean that if the Orders are dated August 13 and they are to report to their unit home station on Sept 10, we only reduce their interest rate to 6% for those few interim weeks (if requested in writing with copy of the Orders)?
No. They are eligible for the 6% reduction in rate from the date they receive their active duty orders for loans obtained prior to reporting. Once they report, any debt incurred after that date is not eligible for the reduced rate under the SCRA.
You'll find further discussion on this in the SCRA forum.