Food and Entertaining How often does Rakuten do 10% back? What is the downside to Rakuten? The only downside to Rakuten is that it can take months to get a check and be paid for shopping you've already forgotten about. If you're a frequent online shopper, using Rakuten is a seamless process.18 Jan 2022 Related Posts:Can you add receipts to Rakuten?What is the catch with Rakuten?What is the downside of Rakuten?What is smart shopper cash back?