FILE - In this Aug. 9, 2018 file photo, Iowa State fairgoers line up to get a corn dog at a concession stand during the opening day of the Iowa State Fair in Des Moines, Iowa. The Iowa State Fair has confirmed that it will require all food and drink vendors to accept credit and debit card payments beginning in 2020. Cash has long been the dominant method of payment for the fried cheese curds, corn dogs, and scores of other foods bought by fairgoers.
FILE - In this Aug. 9, 2018 file photo, Iowa State fairgoers line up to get a corn dog at a concession stand during the opening day of the Iowa State Fair in Des Moines, Iowa. The Iowa State Fair has confirmed that it will require all food and drink vendors to accept credit and debit card payments beginning in 2020. Cash has long been the dominant method of payment for the fried cheese curds, corn dogs, and scores of other foods bought by fairgoers. Charlie Neibergall, File AP Photo
FILE - In this Aug. 9, 2018 file photo, Iowa State fairgoers line up to get a corn dog at a concession stand during the opening day of the Iowa State Fair in Des Moines, Iowa. The Iowa State Fair has confirmed that it will require all food and drink vendors to accept credit and debit card payments beginning in 2020. Cash has long been the dominant method of payment for the fried cheese curds, corn dogs, and scores of other foods bought by fairgoers. Charlie Neibergall, File AP Photo