Every operator who has pulled off a flawless large event will tell you the same thing: it didn't go well because everything went right. It went well because they planned for what could go wrong. The event that looks seamless from the outside has a detailed run-of-show, a clear communications chain, pre-positioned staff, and a technology stack that supports all of it in real time.
The mix of event types — corporate, social, ticketed — can create margins that vary by 2x depending on how well the operation is designed around each format. High-volume events have the highest profit potential in hospitality. They also have the highest cost of failure. The difference between the two is almost always planning and process, not talent.
Chaos at events is optional. Most operators just haven't built the systems to eliminate it yet.