I am supplying 120 marble-cake, buttercream-iced cupcakes for a wedding this Saturday.  The temperature is supposed to be in the low to mid 70's.   I want to set them up on the display stand Saturday morning by 10 a.m., taking them out of the freezer about an hour beforehand.  They probably won't be eaten until 7 p.m. that evening.  Will they still be fresh? 

I don't think I would leave cupcakes out that long; a wedding I attended had cupcakes out for 5 hours and most people complained (to each other; not the bridal couple) that the cupcakes didn't taste good/were dry.   Maybe if you aren't able to set the cupcakes up at a later time, you may have a friend that would help you out?  

Thanks....that's what I was afraid of.