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Plan an entertainment carnival from the ground up: place rides, food stalls and game booths on an open midway and watch a live crowd-flow simulation decide where visitors go, how long they queue, and how much revenue each attraction earns. Every visitor's choice is driven by a real gravity (Huff) attraction model that weighs an attraction's drawing power against distance and current crowding, and every booth is a small multi-server queue with its own capacity, service time and price. Adjust the visitor arrival rate and simulation speed, watch the live wait-time and revenue readouts respond to your layout, and learn — by direct experiment — why spreading capacity across several booths beats piling it all into one giant ride.