The transitory venue, to be run by Caesars Entertainment, will begin operating on June 12.ĭon Ostert, general manager for Harrah’s Columbus Racing and Casino, noted that the casino will be open from 9 am to 1 am daily and will have 250 slot machines along with electronic table games. The temporary casino will join transitory gaming venues in Lincoln and Grand Island, which have now been operating for several months. The Nebraska Racing and Gaming Commission has now approved a gaming license for a temporary casino at Ag Park in Columbus. Nebraska's third racetrack casino is set to start welcoming guests in a month.