If you sell on names and locations, your hardest problem is not demand. It is that demand peaks days before you can do anything with it.
Hangar solved that by treating the announcement as the start of the sale rather than the start of a waiting period: a page live from the first minute, a short window ending on a clear last call, and a shop inside the channel fans actually open. Across the season, that built a large, engaged registrant base, most of whom bought inside a chat window, and delivered several sell-outs.
Nothing in that approach is exclusive to a headliner of Tiësto’s size. Hangar’s smaller shows in the run converted strongly too. The mechanism is the same at every scale: capture the spike, keep the list warm, sell where the fan already is.
That is what Innercrowd pre-registration pages and WhatsApp shops are built for.