Hi Fellow Bakers!  I have a small 2 tier cake due mid October and I want to ice and stack it ahead and freeze, then thaw and put the finishing decorations on it the day before delivery.  I saw some previous posts about freezing decorated cakes and several folks recommend placing the cake in a box and wrapping the box itself in plastic wrap and foil to cut down on condensation.  But I thought that a (clean) plastic tub flipped upside down might protect the cake, keep some moisture out, and be easy to open. Has anyone tried that?  Can you think of any pitfalls?  Thanks so much!

As long as that tub is sealed it should be fine   I get the impression you intend to just turn it over onto the cake board—that is not good enough especially for long term storing   If you are talking about something like Tubberwear then yes it will be fine  

Thank you for your reply! Yes, I was thinking of placing it on the cakeboard and icing and stacking, then placing the whole thing on the inside lid of a big tupperware tub and putting the tub part on top, so the tupperware is upside down, but the cake is right side up in the freezer. 

yes those are great for delivery too -- you can fill other thinner tubs with ice if necessary to help create a climate controlled environment -- 

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