Planet Smoothie is offering registered VIP Rewards members a free 20 oz. Lunar Lemonade on Sunday, June 21, 2026, at participating locations nationwide. The promotion ties to National Smoothie Day and positions the Lunar Lemonade—a blended beverage combining bright, refreshing flavors—as a summer-friendly menu item. The offer is limited to enrolled members of Planet Smoothie's rewards program and available only at participating franchised locations. The chain, based in Scottsdale, Arizona, operates a franchise model across the smoothie-bar segment. **Why It Matters** Seasonal promotions tied to observance days remain a standard loyalty-driver for beverage-focused QSR chains. By gating the offer behind VIP membership, Planet Smoothie captures data on redemption rates and incrementality while encouraging non-members to enroll. The timing—summer solstice—aligns product positioning with warmer-weather consumption patterns.