Garden party formal, please.
Yes, Nashville is on Central time, so you will gain an hour coming down, and loose an hour heading back home.
If you were to drive straight through without stops, it's roughly 4 hours without traffic! Don't forget that you gain an hour on the trip down!
We tried to make sure that we allowed for all of our friends to bring a guest, so if your invitation says “and Guest,” then yes, if not, please let us know and we will do our best to arrange it!