If you plan on driving your personnel vehicle to the ceremony, there is paid parking through Premiumparking.com. P401, the Jax Lot-500 Decatur St, is the closet to the reception venue and Cathedral. The rate for 6 hours on the weekend is $52 and can be booked and paid in advance on premiumparking.com
Ceremony begins promptly at 7:00pm, please try to arrive before then. Entrance will be on the left front side of the church.
The reception venue is directly across the street from the Cathedral. So you will be able to walk to the reception after the ceremony. Check with your hotel about transportation. I did confirm with The Westin that they DO NOT provide transportation. I do know there is a streetcar that you can ride from The Westin and it will drop you off by Jackson square. Check with your hotel for more information and cost. There is also the option to Uber or Lyft. There are several guest staying at the Westin.