Gent is not a car-friendly city.
However, there is a city parking lot at the ceremony venue that can be used.
There is
limited parking at the Heilig Hartkerk (reception venue), street parking is advised but you must buy a ticket. Also, the inner city of Gent is a low-emission zone, so before coming check
that your car can enter.
Taxis are available at the train stations and via
Taxi4You.