Yes, the venue has parking.
Black Tie is the most dressy standard dress code. It would be an elegant long evening gown (not a casual maxi dress, it being long doesn't make it formal) OR a very dressy cocktail dress that preferably falls between the calf and ankle.
Black-tie attire means that you should be wearing a black tuxedo or a dark suit (black suits, dark blue suits, and gray suits are all appropriate).