We give y'all a heads up exactly when things end in the first post of an event. When we did the like 3-4 days after an event, it was because we didn't give you that heads up in the first post.
We also do a reminder roughly 24 hours before the holiday ends. But all the information you need about an event is usually in the first post of an event.
In the future, I can look into idk. Seeing if I can lock all the threads in the holiday event forum and give y'all a bit more time to sort things out.