Christmas Day has a shape everyone knows. The six days after it do not, and that is exactly why they drag.
Novelty wears off fast at this age, and a house full of new things does not solve a whole week on its own. Plan for the second half of the week, not just the first.
Naming the one thing for today — a walk, a visit, a specific game — at breakfast gives the day a landmark. Without it, every day in this stretch looks identical, which is a large part of why it feels endless.
A big box is a den, a car, a shop counter for days. Delay the recycling run by a week and it quietly becomes free entertainment instead of a chore.
Mostly, yes — a week with no bedtime at all tends to make the return to school or nursery afterward much harder. A little later than usual is a reasonable compromise.
That is your call to make for your own household, not ours. If it is working for you, it is working.
Part of our guide to Filling the unstructured days.