That's a great question! Dealing with trash during big events is a huge challenge cities face globally. From my observations and research, proactive cities don't just react—they plan. A common first step is deploying a massive number of temporary bins, often in different colors for recycling and general waste, placed at high-density points like entrances and food areas.
The real key is frequency. Crews work around the clock, often in shifts, to empty bins *before* they overflow. You'll see teams using large rolling carts or small trucks to collect bags constantly during the event. Some cities, like Tokyo during festivals, use clear bag systems so waste is visible and issues are spotted instantly.
Innovation plays a big part. Cities like Amsterdam or Singapore have trialed "smart" compacting bins that hold more and alert crews when full. Others set up central "waste corrals" – large, designated drop-off points with many containers, making collection faster for crews.
Finally, public communication is crucial. Signs, announcements, and even volunteers gently guide people to use bins correctly. The goal is to make proper disposal the easiest choice. It's a massive logistical operation, but when done well, you hardly notice it—which is the sign of true success.