Oh me oh my! But... think of it this way:
You can walk the outside of each room and peek out each new window (you did put in the contract that the company had to wash said windows, right?) Of course, don't peek at the ones with rubble outside.
You don't need to wonder where that chair went to-- it's in the middle! So's that, this, that, and this one too!
Redecorating will be easy now, with nothing against the walls! be creative as you pick select pieces to move back.
When visitors knock on your door, point to the pile, tell them a friend convinced you to make a Dog-Cat Obstacle Course, but then the group canceled. And, you're considering 'leaving it set up' until next year. ;-D
And lastly, announce an Unpile-it Party. Make index cards, each listing an item and where you want it, and put those in a hat. Each person must find 'their' item. They may draw up to 3 cards if they can't move their item(s) yet. First person to move the last item that uncovers the couch "wins" for the whole team-- Prize-- enough people to move the couch, of course! Offer plenty of food and beverages. (Catnip helps lol),