The Rock River Sportsbook at Little River Casino Resort is a partnership between the Little River Band of Ottawa Indians and Rush Street Interactive, DBA BetRivers, a subsidiary of Rush Street Gaming. Teller windows are open 10AM to midnight Friday, Saturday and Sunday and 2PM to midnight on weeknights. Little River Casino Resort Located at US 31 & M-22. The reservation that was created was located on the Manistee River. According to a 2010 report, 84 of employees at the casino are non-tribal members. The venue is open 24 hours daily with six self-serve kiosks for placing bets. Rate inquiries, reservations or spa appointments, and cancellations must be made by calling the hotel or spa. The Little River Band of Ottawa Indians is the largest employer in Manistee County with the Little River Casino Resort accounting for a large chunk of the employees. Half the area is sportsbook and the other half is restaurant. River Rock Sportsbook & Grill operates in the same location as the former Little River sports bar. Rivers Casino in Pittsburgh, PA features non-stop fun with 2200 slots, 100+ table games, a 30-table poker room, 4 restaurants and live entertainment and one. Little River Casino's sportsbook follows FireKeepers Casino in Battle Creek and Four Winds Casino in New Buffalo. Little Rock Casino Resort in Manistee opened its new sports betting venue named 'River Rock Sportsbook & Grill' last week becoming Michigan's third tribe to introduce a sportsbook. Little River Casino Resort adds sports betting