So, I just get done making two 12" and one 8" for a layered wedding cake and as I'm mixing for my next several layers I realize that I forgot oil in the first batch!!! They are done now and I would love to know what ramifications do I have now with these cakes? Will they taste the same, will the texture be different?

update, so after levelling the cakes and having scraps to taste I don't really notice a huge difference? I am just super nervous about this cake because it's for a co-workers wedding. I was also told the wrong date so today is my only day to bake

Did yyou taste it whe you level it? This has never happened to me, so I have no idea.
Edna

It's a wedding cake? And you're being paid for it?

Redo it.

Really, unless it's for family there's no excuse for serving cake that was made without fat from a recipe that included it.

I never add oil to my cakes As you found out they are just as good w/o the added calories

how much oil are we talking about? 2 Tblsp? Or 1/3 cup? etc....

If it is only a couple of tablespoons...then I wouldn't worry about it. However, my white cake recipe calls for 1/3 cup per box, therefore, if that is the case, I would rebake. Cause the oil is added fat which will make a difference in the moistness factor. A couple of tablespoons (like in the pkg recipe will not make that big of difference)....

I have done that before and it really makes me mad at myself!