Abstract: Systems, methods, and computer programs for facilitating customer interaction and fulfillment relating to orders for items and/or services sold by retailers and provided to customers for pick-up are provided. In certain embodiments, the methods comprise: receiving a customer arrival notification for a customer to pick up at a pick-up facility one or more items purchased from a retailer in an order previously placed by the customer; determining an estimated order pick-up time for the order; and providing an electronic pick-up notification to the customer that includes the estimated order pick-up time.