In July 2010, Harrah’s took Watanabe to court for failing to pay an outstanding $14.75 million bill (the equivalent of $18.7m/£14m today). Two years later, Harrah's parent company, Caesar’s Entertainment, was fined $225,000 (£170k) by a regulator in New Jersey for allowing Watanabe to gamble while drunk.
In 2017, Watanabe started a GoFundMe page to cover a $100,000 (£76k) medical bill for the treatment of prostate cancer. The page, which is no longer accepting donations, shows he raised just $28,610 (£21.6k).