When a customer makes an order, we make sure you know about it instantly. New orders appear in the Recent orders view as a list. For each order you can see the name of the customer and the name and quantity of the offer they’ve purchased. All incoming orders are already paid for by the customer.
When the customer walks in to fetch their ResQ purchases, you can simply:
Ask their name
Check the name in the orders list
Give the customer their order
Note that a customer may have placed multiple orders, so make sure they get everything they've ordered.
If there's any confusion regarding the customer's name or ordered portions, you can always ask them to show you the receipt of their purchase. That way you can be sure that the right person is picking up the portions.