A queue system for a lavatory of an aircraft can include an infotainment system configured to receive a user input and to output a request to use the lavatory associated with a seat or occupant, and a queue module operatively connected to the infotainment system. The queue module can be configured to receive the request from the infotainment system and to create and/or modify a virtual lavatory queue based on a request hierarchy of the request to position the request in the virtual lavatory queue, and output a vacancy indicator signal to the infotainment system when the request is at a front of the virtual lavatory queue. The infotainment system can be configured to receive the vacancy indicator signal and display an indication to indicate to a user of the infotainment system that it is the user's turn in the queue.