Yes! Both Ceremony and Reception will be in the same building -- Deerpark at the Biltmore. No need for driving between events.
Biltmore allows our guests access to the estate an hour and a half before the ceremony (4:30). If you want to enter earlier and/or if you want to tour the house, you will need to buy tickets. One exception is if you have reservations with the inn or hotel on Biltmore property, access is included with your reservation.