Below are the two eligibility clauses from the "Disney Drop" Terms and Conditions:
Eligibility
Select current Disney+ subscribers whose subscriptions renew for another year at $79.99 are eligible to receive the Mystery Disney+ Disney Drop at no additional cost (approximately $150 value per box for as low as $79.99). Disney+, in its sole discretion, may designate other consumers (e.g., prize recipients) as eligible for the Disney+ Disney Drop. One box per household. While supplies last. Upon renewal, Disney+ will send a hyperlink code, redeemable for the Mystery Disney+ Disney Drop, to the email address associated with your Disney+ account.
Eligibility
Select Disney+ subscribers in the United States (excluding its territorities & possessions) with active subscriptions since December 31, 2019 are eligible to receive a Disney+ Disney Drop at no additional cost (approximately $150 value per box), while supplies last. Disney+, in its sole discretion, may designate other consumers (e.g., prize recipients) as eligible for the Disney+ Disney Drop. One box per household. While supplies last. Disney+ will send a hyperlink code, redeemable for the Mystery Disney+ Disney Drop, to the email address associated with your Disney+ account.