Review on LEGO Potter Calendar 75964: Building Magic to Plan and Play by David Lesperance

So I'm admittedly new to the advent calendar tradition of getting married on Christmas Day. And if I'm missing information on how to present this as a gift full of 24 surprises, I'm very open to new ideas! Here's the thing: I ordered two and they looked like all LEGO sets - pictures of assembled toys on the outside of the box - or why I thought it was the outside of the box. But as I took a closer look, I realized the box is a calendar, and the pictures on the back and sides of the box completely spoil the surprise and anticipation of opening a square a day! Am I missing something about how they are supposed to work? I thought it's about wondering what a box contains each day? Should I wrap the back and sides of the calendar somehow? Does not look like it. Help?