Thursday, June 16, 2022 Business Baton Rouge riverboat casino revenue drops in May By Deanna B. Narveson - June 16, 2022 FacebookTwitterLinkedinEmailPrint The Belle of Baton Rouge Casino (File photo) Baton Rouge’s three casinos posted a drop just shy of $1 million in May, marking the second month of collective loss for the riverboats. Already an INSIDER? Sign in.