A "not full" restaurant scenario can be a scheduling algorithm issue -- "we need a 4 top at 7:30 pm;" meaning everyone who comes in between opening and 7:30 pm

A "not full" restaurant scenario can be a scheduling algorithm issue -- "we need a 4 top at 7:30 pm;" meaning everyone who comes in between opening and 7:30 pm sees it empty. Multiply across the entire space, and you can get bad utilization while "100% booked."