I am new to the cake decorating and am making my first big cake for my god-daughters birthday. I work full time and am wondering with my time constraints if it is ok to make the fondant on one night and then cover the cake with it on the following night?

You should always make your fondant a day ahead and let it rest before you use it.

actually that's best. While you can use it fresh made (done that), it is better to let it "take a nap" (rest) overnight

that is the way I do it and sometimes make it the weekend before I need it. It is better when you you give it time to rest.

Like the others have said...you SHOULD make it at least a day in advance. You can't use fondant right after it's been made. I make several batches twice a week so that I always have it on hand. I use Michele Foster's Fondant exclusively. I don't use MMF....hate the stuff...and I don't care for most premade fondants.

If we are using fondant, how far in advance can we make it? If we cover it and let it sit at room temperature, how long will it keep?

My son is getting married July 17th, and I was wondering how far in advance I can make and keep some fondant decorations.
Any suggestions would really be appreciated.
TY

MFF is good for a month (sealed tight) at room temp and frozen for up to 3 months.