When sourcing market lights (often referred to as festoon or string lights), you must prioritize IP65 or IP67 waterproof ratings to ensure durability against rain and snow. Look for heavy-duty 18AWG or 16AWG wiring to prevent voltage drop over long distances. For energy efficiency and longevity, specify shatterproof LED filament bulbs with a lifespan of at least 25,000 hours. Additionally, ensure the color temperature (CCT) is consistent, typically 2700K to 3000K, to create a warm, inviting commercial atmosphere.