Yes, absolutely. Lots of quality advice already given. Just remember, your "event" day is like a piano recital day ... a day of repeats. Do NOT try a different flavor energy drink, energy bar, change your saddle position, new gloves. Nothing new. Repeat how you train and you'll be fine. Also, don't get caught up riding someone else's "ride". Ride within yourself.
Don't foget to let us all know how you did ...