A new shopping support module is available. You can send us your order comment with new order. In the step 3 "shipping method" you can see a blank text field under "your delivery instruction". You can release your shipping instructions and order comment here. We will follow your instructions to arrange the shipment.
"Your delivery instructions" will not show in customers order records in account panel. Only we can see it in admin control panel. Also the email order confirmation will not include "your delivery instructions".