Open any event organizer's inbox in the two weeks before their annual conference, and you will find the same thread: "Late registrations are killing us." Badge orders placed too early. Session caps already set. The event app launched before a third of attendees had even signed up.
The assumption behind this panic is that late sign-ups are a problem to be solved—stragglers who should have registered months ago. But the evidence tells a different story. Late registrations are not an anomaly. They are a pattern.
For associations and trade show organizations, the final two to four weeks before an event consistently produce a disproportionate share of total registrations. The shape of this curve—a slow ramp in early bird season, a quiet middle, and a sharp late surge—is nearly universal across event types and audience sizes. The organizers who treat this surge as a strategic moment rather than an operational crisis are the ones capturing revenue that others leave behind.
