A queue monitoring system includes at least one sensor configured to monitor guests admitted from an entrance and generate a sensor signal. The system also includes a virtual queue controller comprising a processor and communications circuitry, wherein the virtual queue controller is configured to: communicate guest admittance information to an operator device, the guest admittance information causing the operator device to display a target number of guests to be admitted during a time interval; determine a count of guests admitted from the entrance during the time interval based on the sensor signal; determine a remaining number representative of remaining guests to be admitted based on the target number and the count of guests admitted from the entrance; and communicate a standby admit signal to the operator device to cause the operator device to display the remaining number.