You may start arriving at 3:30, but the ceremony will not start until 4 pm.
Unless you asked me when RSVPing, no. There is only enough room for the guests invited.
Yes, there is parking across the street from the venue. It's a parking lot located in front of the Rescue Mission of Cape Fear Homeless Shelter. Parking is free. If that lot is full, you may also park along Castle Street.
If you are in the wedding party, the rehearsal will be on Saturday morning at 10 am at the venue. If you have been invited to the rehearsal dinner, that will be held at Creative Tastings at 6:30 pm Saturday evening.
Please dress as if you're attending a Garden Party. Not exactly formal, but not totally casual. Think Spring colors, and I recommend light and breezy clothes as it will likely be warm during the outdoor ceremony.