Prioritize real-time inventory visibility, integrated WMS/ERP connectivity, pick-and-pack accuracy, kitting and returns processing, and proven parcel and LTL carrier integrations. Also evaluate SLA commitments, lead times for replenishment, and the 3PL’s experience managing seasonal spikes common to coastal markets.

Coastal geography increases reliance on multimodal routes (truck, ferry, air) and can introduce longer transit windows. Validate carrier schedules, freight consolidation options, and contingency routing. Factor in buffer days for inbound replenishment and confirm the 3PL’s carrier relationships and rollup freight capabilities.

Negotiate clear rate structures for storage, handling, and peak surcharges; minimum throughput commitments; SLA‑based penalties for order accuracy and lead times; and transparent accessorial pricing. Include defined onboarding timelines, inventory reconciliation cadence, and termination/transition terms to protect continuity.

Adopt demand‑driven replenishment, establish safety stock thresholds for peak seasons, and use distributed inventory placement for closer proximity to high-demand zones. Coordinate promotions with 3PL capacity planning and secure flexible labor or temporary storage options ahead of known seasonal surges.

Confirm direct carrier lanes, transit time averages, and last‑mile coverage for both urban and remote addresses. Review historical on‑time delivery rates, order accuracy, parcel tracking integration, and claims resolution processes. Ensure the 3PL can provide KPIs and dashboards for continuous monitoring.