Go to Ecommerce > Settings > Wine (or product type)
Go to Shipping section.
Enter the amount to charge on orders to include Ice packs and or Cold service, based on number of items in cart.
You can include a custom message on the checkout form advising where this is required to be added. Add a snippet called "__cold_service" (copy that exactly, without the quotes) and enter the text you want to appear on checkout.
Test and make sure the cold service or ice packs are being charged properly.