Overall, the promotion has more than a million prizes up for grabs, including 10 pairs of tickets to the sold-out festival.
Other prizes include festival-themed hoodies, T-shirts, bucket hats, sunglasses and can coolers, as well as a million coupons for 50p off Brothers drinks.
It runs until 31 May across 500ml bottles of Festival Apple Cider, Cherry Bakewell Cider and the newly launched 500ml bottle format of Toffee Apple Cider. It is also available on 10x440ml can multipacks of Festival Apple Cider.
Promotional packs will replace standard stock for the duration of the promotion. The supplier is supporting the campaign with social media and digital advertising.
Nicola Randall, head of marketing at Brothers Drinks Co., said: “Brothers Cider is all about bringing people together and creating memorable moments with delicious drinks, and we are going to make an even greater impact this year by giving consumers chances to win big with our best-ever selection of prizes, and stockists the chance to benefit from increased shopper demand for the promotional packs.”