Reserve cylinders, weights, gas and exposure protection before flying. Ask whether quoted prices include fills, guiding and equipment, and whether unusual configurations require approval. Check valve compatibility, cylinder sizes, nitrox availability and the procedure for gas analysis.
Follow the carrier's current rules for cylinders, batteries, lights, tools and baggage. Renting cylinders and weights locally is generally simpler than transporting them. Label kit, protect regulators and computers, carry essential personal items where permitted, and confirm drying and storage arrangements. Remote-island availability should never be assumed from a mainland operator's inventory.