I had made fondant MMF a couple weeks ago and BC last week (no dairy in recipe), and I baked the layers of the cake for my hubby's birthday party (was expecting 30 people so it was going to be a large cake). I wrapped the MMF in plastic wrap a couple of times and then put it in a gallon bag and squeezed out the air. I thought it could keep a couple weeks like that at room temperature. I also figured the BC would keep several days in a big container with a lid at room temperature. I wrapped the cake layers and froze them as soon as they were cool, I knew it was best to carve when frozen or at least really cold. The problem I have is we had an out of town death in the family and had to cancel my hubby;s party so we could go to the funeral. Now I have this MMF, BC and cake and I don't know how long it will keep or if it will keep what do I need to do?
Your help is much appreciated & I know I will need to do something with it TODAY if I'm supposed to store it differently. Thanks!

I was told by my teacher in one of my classes that buttercream should be fine up to three weeks if stored in a sealed container at room temp. Your fondant will be good.... well I would not say forever, but it will deffinitley be good when you make this cake. You are doing fine on storing your goods. And I send my condolences to you and your husband. Stay safe in your travels.

Thanks for the condolences and the tips. I'm also wondering if I need to store it longer than 3 weeks if I should freeze it or do something else? And how long do frozen cakes stay good in the freezer?
Thanks!