In Norse mythology, which customer loyalty program concept is reflected in Odin's relationship with the mead of poetry?

In mythology and folklore across cultures, there are fascinating examples of commerce, exchange, and customer loyalty that mirror modern retail concepts. From magical marketplaces to divine customer service challenges, the stories of gods, heroes, and mythical beings often include surprising retail parallels. Test your knowledge of how ancient myths reflect modern customer loyalty programs and shopping behaviors in this challenging trivia question!

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Exclusive access - Odin granted the mead only to his loyal followers, creating an 'members-only' benefit for poets and warriors loyal to him
Point-based rewards - Odin awarded 'inspiration points' that could be redeemed for sips of the mead based on battles won
Referral program - Those who brought new warriors to Valhalla received additional portions of the mead as a recruitment reward
Seasonal promotions - The mead was only available during specific Norse festivals as a limited-time offering to increase demand