How long will fairy cakes last

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For reasons too dull to explain I have to make 150 fairy cakes for next sat. I have no freezer space though. How long will they last unfrozen (and uniced)?

Ah, I was going to say freeze!
A couple of days, easily.
Any chance of eating from the freezer for the next few days to make space?
Or a plea on freecycle/gumtree etc for a freezer for a week?