A method for fulfilling a plurality of orders for goods at a provider location comprises obtaining an arrival sequence estimate for each of a plurality of users indicating the sequence in which the users are expected to arrive, and organizing completed orders according to the arrival sequence estimate. The arrival sequence estimate may be obtained by ordering users according to their respective radial distances from a target, and may also be used to schedule processing of the orders. Alternatively, arrival estimates for when each of the users is expected to arrive may be used to schedule processing of the orders. A dynamic arrival estimate may be obtained based on an expected travel path toward the destination during a first trip portion comprising travel within a constrained travel path network, and based on radial distance from the destination during a second trip portion subsequent to the first trip portion.