Then close the loop with the list
Registrations are the first half of the number; attendance is the point of them. Leave the automatic reminder emails switched on at short notice or long, since they arrive at twenty-four hours, one hour and fifteen minutes and are the cheapest turnout you will ever buy. Use the seat cap to create a real reason to answer today rather than an invented one โ the page already shows places left and says when it is full, and a waitlist catches the overflow instead of losing it.
One honest caution: there is no approval step on registrations, and no clever filter that turns a browser into a committed attendee. What you get is names, statuses you maintain yourself, and the rate. Fix the page, fix the send, and count again on the next one.