Require measurable KPIs: order lead time, dock-to-stock, pick accuracy, on-time dispatch, and capacity utilization. Also request carrier connectivity maps, average inbound consolidation times, and technology integration proofs (WMS/APIs) to validate performance under peak volumes.

Feeder frequency affects safety stock and reorder cadence — less frequent sailings increase inventory carrying costs and buffer needs. Model total landed cost including consolidation, dwell time, and expedited options; align reorder points with feeder schedules to minimize stockouts and expedite fees.

Look for WMS with multichannel order routing, pick/pack scalability, returns handling, and cross-dock throughput. Infrastructure: segmented storage, pick-face density, and last-mile carrier integrations supporting parcel and palletized flows. Confirm SLAs for same-day or next-day fulfillment where required.

Compare cost-to-serve by SKU using activity-based costing: storage per pallet/cubic meter, receiving touches, pick labor per order, and outbound transportation. Include seasonal labor surcharges, peak slotting fees, and any minimum-billing thresholds to forecast true marginal costs during peak windows.