FREE Rockstar Energy Drink at Walmart after Ibotta Cash Back Posted On December 23, 2021 Get a FREE Rockstar Energy Drink at Walmart after Ibotta Cash Back! Simply add the offer in the app (search for “Rockstar to locate it) then purchase one 16 0z. Rockstar Energy Drink at Walmart and submit for the rebate, making this totally FREE. *Please note, this offer may not be available for all users.If you are new to Ibotta you can sign up to get a for a FREE $10 Welcome Bonus which can be redeemed after you redeem your first offer. Ibotta is a smart new way to earn cash when you shop. It’s better than coupons – we’re giving you cash back offers at your favorite grocery and retail stores. Get hundreds of dollars in savings, discounts, cash back offers, exclusive deals and more – either via our free mobile app or website.