Prioritize SLA adherence (order-to-ship time), order accuracy, inventory accuracy, cost-per-pick, dock turnaround, and return processing speed. Also evaluate WMS integration capability, average daily throughput, seasonal scalability, and carrier on-time performance to ensure alignment with both B2B and consumer expectations.

Closer proximity to feeder ports and short-haul air services reduces drayage, handling, and transit time, lowering landed cost and improving predictability. Consolidated inbound shipments and direct feeder schedules can reduce touchpoints; consider seasonal sailings and air frequency when modelling lead times and buffer stock.

Require a modern WMS with API/EDI, real-time inventory visibility, zone or batch picking, returns processing and cross-dock capability. Additional value-adds: climate-controlled storage, secure bonded areas, scalable labor pools, and reporting dashboards for inventory turns and fulfillment cost analysis.

Confirm bonded warehouse options, customs brokerage processes, and local import/export documentation requirements. Review liability limits, marine and cargo insurance, and any island-specific permits or taxes. Ensure the 3PL has established customs agent relationships and compliance procedures to avoid clearance delays.